Amazfit GTS 4 Mini Smartwatch

Amazfit GTS 4 Mini Smartwatch — image 1
Amazfit GTS 4 Mini Smartwatch — image 2
Amazfit GTS 4 Mini Smartwatch — image 3
Amazfit GTS 4 Mini Smartwatch — image 4
Amazfit GTS 4 Mini Smartwatch — image 5
Amazfit GTS 4 Mini Smartwatch — image 6
Amazfit GTS 4 Mini Smartwatch — image 7
Amazfit GTS 4 Mini Smartwatch — image 8
Amazfit GTS 4 Mini Smartwatch — image 9
Amazfit GTS 4 Mini Smartwatch — image 10
78%
22%
93%
Battery Life
84%
GPS Accuracy
81%
Health Monitoring
91%
Comfort & Fit
82%
Display Quality
79%
Sport & Workout Tracking
58%
Smart Features
61%
App & Ecosystem
77%
Build Quality
88%
Value for Money
83%
Setup & Pairing
72%
Watch Face & Customization
69%
Notification Handling
74%
Sleep Tracking
More

Overview

The Amazfit GTS 4 Mini Smartwatch sits in a sweet spot of the mid-range wearable market — compact enough for smaller wrists, capable enough to satisfy serious fitness trackers. Running on Zepp OS with Amazon Alexa built-in, it offers voice assistant functionality you rarely find at this price tier. The 1.65″ AMOLED display looks sharp on the wrist without feeling oversized. It launched in mid-2022 and has stayed competitive largely because of its exceptional battery endurance and broad sport tracking support. That said, buyers should know upfront: this Amazfit watch does not support Bluetooth phone calls or turn-by-turn route navigation.

Features & Benefits

The GTS 4 Mini packs a lot into a slim chassis. Its built-in 5-system GPS uses circularly-polarized antenna technology, meaning your running routes and cycling tracks register with noticeably better consistency than you might expect here. Tap the health button once and the watch measures heart rate, blood oxygen, and stress level together — results arrive in roughly 45 seconds, which feels genuinely quick for a simultaneous reading. With 120+ sport modes, including pool and open water swimming backed by 5 ATM water resistance, this compact fitness tracker handles almost any activity you throw at it. Battery life is where it really pulls ahead: 15 days of typical use is realistic, not just marketing copy.

Best For

This Amazfit watch makes the most sense for people who want real fitness functionality without the bulk or the price tag of a Garmin or Apple Watch. If you have smaller wrists, the compact body feels proportionate in a way that 44mm or 46mm watches rarely do. Swimmers and outdoor runners will appreciate the water resistance and GPS reliability. iPhone and Android users both get full compatibility, and Alexa on the wrist proves genuinely useful for quick questions or setting reminders mid-run. For frequent travelers or anyone who dislikes charging gadgets every other day, the long battery life alone makes this compact fitness tracker worth a serious look.

User Feedback

With a 4.3-star rating across a broad buyer base, the GTS 4 Mini earns its reputation mostly through what it does consistently well. Battery life comes up repeatedly in reviews — not as a surprise, but as something buyers say actually matches the advertised claim, which is not always the case with wearables. GPS tracking for runs and rides earns similar praise. Where people push back is on the software side: the Zepp companion app feels limited compared to Garmin Connect or the Apple ecosystem, and the lack of call support is a recurring complaint from those expecting fuller smartwatch functionality. Women reviewers specifically highlight the lightweight fit as a standout strength.

#Smartwatches
#Wearable Technology
#Electronics

Pros

  • Battery life routinely meets or exceeds the advertised 15-day claim in everyday use.
  • The built-in 5-system GPS tracks runs and rides with reliable accuracy for the price tier.
  • At under an ounce, this Amazfit watch is one of the lightest GPS-enabled options available.
  • Simultaneous heart rate, SpO2, and stress readings complete in roughly 45 seconds with a single tap.
  • 5 ATM water resistance means you can swim laps or get caught in the rain without worry.
  • Amazon Alexa on the wrist is a genuinely useful addition for voice queries and reminders mid-activity.
  • Over 120 sport modes cover nearly every workout type, including pool and open water swimming.
  • The 1.65″ AMOLED display is sharp and easy to read outdoors for its compact size.
  • Works with both Android and iPhone, making it a flexible choice for mixed-device households.
  • At its price point, the combination of GPS, health monitoring, and battery life is hard to match.

Cons

  • No Bluetooth calling support, which rivals at a similar price are beginning to offer.
  • The Zepp companion app feels underdeveloped compared to Garmin or Apple Health ecosystems.
  • No route import or turn-by-turn navigation, limiting usefulness for trail runners and hikers.
  • Zepp OS app selection is narrow, restricting how much you can customize or extend functionality.
  • The AI coaching feature found on pricier Amazfit models is absent here.
  • Sleep tracking data, while present, lacks the granular breakdown serious sleep-focused users may want.
  • No onboard music storage or streaming support, so you cannot leave your phone behind on runs.
  • Stress monitoring is a passive reading rather than a deeply analyzed or actionable metric.
  • Watch face customization options, while plentiful in number, are limited in how deeply you can personalize them.

Ratings

The scores below reflect an AI-driven analysis of verified global user reviews for the Amazfit GTS 4 Mini Smartwatch, with spam, bot-submitted, and incentivized feedback actively filtered out before scoring. Each category captures what real buyers consistently praised or flagged across thousands of purchase experiences worldwide. Both the standout strengths and the genuine frustrations are represented transparently in every score.

Battery Life
93%
Battery performance is consistently the most praised aspect of this watch across buyer reviews. Real-world users regularly report hitting the full 15 days on a single charge with always-on heart rate monitoring and daily notifications active — a claim that holds up better than most competitors at this price tier.
Heavy GPS users, such as those logging daily outdoor runs, will see battery life drop noticeably, sometimes closer to 7 to 9 days. The battery saver mode that claims 45 days also strips out most health monitoring features, making it less practical for fitness-oriented users.
GPS Accuracy
84%
For a mid-range watch, GPS tracking earns consistent praise from runners and cyclists who use it for route logging during commutes and weekend rides. The 5-system positioning locks on quickly in open areas and produces routes that align well with mapping apps when reviewed afterward.
In dense urban environments or under heavy tree cover, some users report occasional drift and inconsistent route lines. It is not on par with Garmin-grade GPS, and buyers expecting survey-level accuracy during trail running may find it falls short.
Health Monitoring
81%
19%
The single-tap simultaneous reading of heart rate, blood oxygen, and stress level is a genuinely useful feature that most buyers appreciate during post-workout recovery checks or mid-day wellness checks at the office. Sleep tracking covers light, deep, and REM stages and runs passively without any manual input needed.
Some users feel the stress monitoring data lacks actionable context — the score appears without enough guidance on what to do with it. Sleep data, while present, is considered surface-level by users who have previously owned Garmin or Fitbit devices with more granular analysis.
Comfort & Fit
91%
At under an ounce, this is one of the lightest GPS-equipped watches on the market, and buyers with smaller wrists consistently call out how well-proportioned it feels compared to 44mm or 46mm alternatives. Many users report forgetting they are wearing it during sleep tracking, which itself reflects well on the overall comfort level.
Users with larger wrists may find the compact form factor looks undersized and the display harder to interact with during workouts. The default silicone band has received mixed feedback on breathability during extended summer wear.
Display Quality
82%
18%
The 1.65″ AMOLED panel with 336x384 resolution delivers vibrant colors and strong outdoor legibility, which buyers notice immediately when switching from lesser LCD-based trackers. The always-on display option keeps time visible at a glance without requiring a wrist raise.
The display is on the smaller side for users who wear reading glasses or have trouble with fine on-screen text. Brightness in direct afternoon sunlight can feel just adequate rather than truly punchy compared to newer AMOLED panels on competing devices.
Sport & Workout Tracking
79%
21%
With over 120 sport modes and auto-recognition for 7 common activities, the GTS 4 Mini handles the vast majority of workout types most everyday athletes actually use. Pool and open water swimming modes with 5 ATM protection make it a genuinely useful companion for swimmers who want lap counts and pace data.
The breadth of sport modes can feel superficial — many of the 120-plus modes differ only marginally in how they log data. Buyers coming from Garmin or even mid-range Polar devices will notice the absence of structured training plans or recovery load analysis.
Smart Features
58%
42%
Alexa integration stands out as a surprisingly practical addition at this price, letting users set timers, ask quick questions, or get translations mid-run without pulling out their phone. Notification mirroring for calls, texts, and app alerts works reliably once paired.
The absence of Bluetooth calling is a significant gap for buyers who expected full smartwatch functionality. There is no onboard music storage or streaming support either, so you cannot leave your phone behind during a workout if you want audio.
App & Ecosystem
61%
39%
The Zepp app is clean and reasonably intuitive for first-time smartwatch users, covering health dashboards, sport history, and watch face management in one place. Connectivity with both Android and iOS is handled consistently without repeated pairing issues, which some rival ecosystems struggle with.
Power users quickly hit the ceiling of what Zepp OS and the companion app offer — third-party app support is limited, and the data export options are narrow compared to Garmin Connect or Apple Health. Users who rely on specific fitness platforms like Strava will find integration more limited than expected.
Build Quality
77%
23%
The watch feels solid for its weight class, with a well-finished casing and a display that has held up well in everyday knock and scratch testing based on long-term owner reviews. The 5 ATM water resistance is genuine and performs reliably across pool and open water use without seal degradation reported in most reviews.
The plastic casing, while lightweight, does not convey the premium feel of metal-bodied competitors. A handful of long-term users have noted that the band attachment points show wear after extended daily use, particularly with frequent band swaps.
Value for Money
88%
At its price point, the combination of built-in GPS, accurate health sensors, Alexa, 15-day battery life, and swimming support is genuinely difficult to match among competing trackers. Most buyers who cross-shopped against alternatives in the same range concluded the GTS 4 Mini offered the strongest core fitness feature set per dollar.
The value equation weakens if smart features like calling, navigation, or third-party app support are important to you — in that case, spending more on a Wear OS device becomes justifiable. Buyers who do not use GPS or health monitoring heavily may find simpler and cheaper trackers equally sufficient.
Setup & Pairing
83%
Initial setup through the Zepp app is straightforward and typically takes under ten minutes for both iPhone and Android users. Bluetooth pairing is stable in everyday use, with few reports of the watch disconnecting unexpectedly during daily wear.
Some iPhone users report that the first-time Zepp account setup feels unnecessarily involved, requiring more permissions than expected. Firmware update notifications can be disruptive and occasionally require a manual restart to complete properly.
Watch Face & Customization
72%
28%
Over 50 watch faces accessible through the Zepp app cover a wide range of visual styles, from sporty data-dense layouts to cleaner analog-style designs, giving users enough variety to match their daily context. Switching faces takes only a few seconds directly from the Zepp app.
Deeper customization — such as choosing exactly which data complications appear on a given face — is limited to a subset of faces rather than being universally available. Users who enjoy tinkering with highly personalized watch faces will find the options feel constrained after the initial setup.
Notification Handling
69%
31%
Standard notifications from messaging apps, emails, and calendar reminders mirror reliably to the watch with minimal delay under typical Bluetooth range conditions. The display is bright enough to read notifications at a glance without needing to shield the screen.
Reply functionality from the watch is limited and varies by platform — Android users get slightly more interactive options than iPhone users, but neither experience approaches what a full smartwatch delivers. Long notifications are truncated and cannot be scrolled in full on the small display.
Sleep Tracking
74%
26%
Automatic sleep detection works without manual start or stop, and the lightweight build makes wearing it overnight genuinely comfortable for most users. The Zepp app presents sleep stage breakdowns in a clean visual format that is easy to interpret first thing in the morning.
The sleep data is useful at a surface level but lacks the depth that dedicated sleep tools or higher-end Amazfit models provide, particularly around breathing rate trends or personalized sleep score explanations. A small number of users report occasional missed sleep sessions when the auto-detection fails to trigger.

Suitable for:

The Amazfit GTS 4 Mini Smartwatch is a strong fit for anyone who wants capable fitness tracking without the size, weight, or price of a flagship device. It particularly shines for people with smaller wrists who have struggled to find a smartwatch that looks and feels proportionate — at under an ounce, it barely registers on the wrist during workouts. Runners, cyclists, and swimmers will get genuine value from the built-in GPS and 5 ATM water resistance, rather than treating those as checkbox features. If you travel frequently or simply hate the ritual of nightly charging, the 15-day real-world battery life is a practical advantage that holds up outside of lab conditions. It also works well for iPhone and Android users alike who want Alexa accessible on their wrist for quick reminders, timers, or voice queries during a workout or commute.

Not suitable for:

The Amazfit GTS 4 Mini Smartwatch is not the right choice if you expect a full smartwatch experience comparable to an Apple Watch or a Wear OS device. There is no Bluetooth calling support, so if taking or making calls from your wrist is important, you will need to look elsewhere. The Zepp OS ecosystem, while functional, is still developing — third-party app selection is thin, and the companion app lacks the depth and polish of Garmin Connect or Apple Health for those who dig into their data. Users who rely on turn-by-turn navigation during outdoor activities will also find this watch lacking, as route import and live navigation are not supported. If you are deeply embedded in a particular health or fitness platform and want tight integration, this compact fitness tracker may frustrate more than it helps.

Specifications

  • Display: The watch features a 1.65″ AMOLED screen with a 336x384 pixel resolution, delivering sharp, vibrant visuals in a compact footprint.
  • Battery Capacity: A 270 mAh lithium polymer battery powers the watch, supporting up to 15 days of typical use or up to 45 days in battery saver mode.
  • GPS: Built-in GPS supports 5 satellite positioning systems and uses circularly-polarized antenna technology to improve outdoor tracking consistency.
  • Water Resistance: Rated at 5 ATM, the watch can withstand water pressure equivalent to 50 meters depth and supports both pool and open water swimming modes.
  • Sports Modes: Over 120 sport modes are available, with smart auto-recognition for 7 common activities including walking, running, and cycling.
  • Health Sensors: The watch continuously monitors heart rate and tracks blood oxygen saturation (SpO2), stress level, and sleep quality throughout the day and night.
  • Operating System: Zepp OS powers the watch, offering 10+ built-in mini apps including the Home Connect third-party integration for added daily utility.
  • Voice Assistant: Amazon Alexa is built into the watch, allowing users to set alarms, ask questions, and request translations directly from their wrist.
  • Compatibility: The watch pairs with both Android and iOS smartphones via Bluetooth for notifications, health data sync, and app management.
  • Dimensions: The watch body measures 1.64 x 1.44 x 0.36 inches, making it one of the more compact GPS-enabled smartwatches in its category.
  • Weight: The watch weighs just 0.96 ounces, keeping it light enough for all-day and sleep-tracking wear without noticeable wrist fatigue.
  • Connectivity: Bluetooth is the primary wireless communication standard, handling both smartphone pairing and Alexa voice assistant functionality.
  • Storage: The watch includes 2300 MB of total storage and 512 MB of RAM to support Zepp OS apps and watch face management.
  • Watch Faces: Over 50 watch face designs are available through the Zepp app, with options ranging from fitness-focused layouts to more traditional analog styles.
  • Screen Size: The standing screen display measures 1.65 inches diagonally, providing a readable interface without dominating smaller wrists.
  • RAM: 512 MB of installed RAM supports smooth operation of Zepp OS and its suite of mini apps under typical usage conditions.
  • Charging: The watch charges via a magnetic charging cable; battery charges from low to full in approximately two hours under standard conditions.
  • Band Compatibility: The watch uses a standard 20mm band width, making it compatible with a wide range of third-party replacement straps available at most accessory retailers.

Related Reviews

Amazfit GTS 2 Mini Smart Watch
Amazfit GTS 2 Mini Smart Watch
86%
93%
Battery Life
89%
Comfort & Fit
85%
Build Quality
87%
Health & Fitness Tracking
91%
Display Quality
More
Fitbit Versa 4 Fitness Smartwatch
Fitbit Versa 4 Fitness Smartwatch
77%
91%
Battery Life
86%
Sleep Tracking
83%
Fitness Tracking
71%
GPS Accuracy
78%
Heart Rate Monitoring
More
Garmin vivoactive 4 GPS Smartwatch
Garmin vivoactive 4 GPS Smartwatch
88%
90%
Battery Life
94%
Fitness & Health Tracking
86%
Music Storage & Playback
88%
Build Quality
85%
Ease of Use
More
Amazfit GTR Mini 43mm Smartwatch
Amazfit GTR Mini 43mm Smartwatch
76%
93%
Battery Life
74%
GPS Accuracy
91%
Comfort & Wearability
71%
Health Monitoring
83%
Sleep Tracking
More
DJI RS 4 Mini Combo
DJI RS 4 Mini Combo
82%
93%
Setup Speed
91%
Stabilization Performance
84%
Intelligent Tracking
89%
Build Quality & Materials
88%
Vertical Shooting Switch
More
Apple iPad Mini 4 32GB Refurbished Tablet
Apple iPad Mini 4 32GB Refurbished Tablet
71%
88%
Display Quality
83%
Build Quality
71%
Performance
54%
Storage Capacity
74%
Battery Life
More
Versace 4-Piece Mini Men's Fragrance Gift Set
Versace 4-Piece Mini Men's Fragrance Gift Set
79%
86%
Scent Authenticity
91%
Value for Money
88%
Gift Presentation
89%
Scent Variety
58%
Longevity & Sillage
More
Amazfit T-Rex 3 Rugged Smartwatch
Amazfit T-Rex 3 Rugged Smartwatch
80%
93%
Battery Life
88%
GPS Accuracy
91%
Build Quality & Durability
86%
Display Quality
84%
Offline Maps & Navigation
More
STUDIOFINIX ST-68 4-Channel Mini Bluetooth Amplifier
STUDIOFINIX ST-68 4-Channel Mini Bluetooth Amplifier
73%
88%
Ease of Installation
83%
Bluetooth Connectivity
71%
Sound Quality
58%
Power Output Accuracy
62%
Build Quality
More
Schiit Loki Mini+ 4-Band Equalizer
Schiit Loki Mini+ 4-Band Equalizer
81%
91%
Signal Transparency
93%
Passive Bypass Quality
88%
Build Quality
82%
Noise Floor
76%
Tonal Control Range
More

FAQ

It works with both. The GTS 4 Mini connects to iPhone and Android devices via the Zepp app, which is available on both the App Store and Google Play. iPhone users will get notifications and health data sync, though some deeper integrations like calendar sync can be more limited on iOS compared to Android.

No, this is one of the key limitations to know before buying. The GTS 4 Mini does not support Bluetooth calling, so you cannot make or receive calls from your wrist. If call support is essential for you, you will need to consider a different watch.

GPS performance is generally well-regarded for this price range. The 5-system GPS with polarized antenna technology locks on reasonably quickly and tracks routes with solid consistency for everyday runners and cyclists. It is not survey-grade precision, but most users find it more than adequate for recording outdoor workouts.

The 15-day battery life is one area where real-world user experience tends to match the advertised claim, which is not always the case with wearables. With GPS-heavy workouts, that number will come down, but for daily step tracking, health monitoring, and notification use, hitting around two weeks between charges is achievable.

Yes, the watch is rated at 5 ATM, which means it handles pool swimming and open water swimming without issue. It even has dedicated sport modes for both. Just rinse it with fresh water after exposure to saltwater or chlorine to keep the seals and band in good shape over time.

Zepp OS is functional and smooth, but it is a closed, proprietary system rather than an open platform like Wear OS. That means app availability is limited to what Amazfit provides or approves, and it will not feel as expansive as an Apple Watch or a Wear OS device. For health and fitness tracking it does the job well; for general smartwatch versatility it is more constrained.

For basic functions like time display, step tracking, heart rate monitoring, and workouts with GPS, the watch operates independently without your phone present. However, features like Alexa, notifications, and data sync require a Bluetooth connection to your smartphone.

This is genuinely one of the better options for smaller wrists. The body is compact and lightweight, and the 1.65″ AMOLED screen is sharp enough to read at a glance. Several reviewers with smaller wrists specifically call out the fit as a highlight compared to bulkier alternatives.

Yes, the watch uses a standard 20mm band attachment, which means you are not locked into Amazfit-branded straps. Replacement bands in silicone, leather, or metal mesh are widely available from third-party sellers at various price points.

The watch does track sleep automatically each night, covering total sleep duration and breaking it into light, deep, and REM phases. It also monitors breathing quality during sleep. The data is viewable in the Zepp app, though it is not as granular or actionable as what you would get from dedicated sleep trackers or the higher-end Amazfit models.

Where to Buy

Walmart
Amazfit GTS 4 Mini Smartwatch
In stock $89.00
Buy Now
eBay
Amazfit GTS 4 Mini Smartwatch
In stock $60.00
Buy Now
Poshmark
Amazfit GTS 4 Mini Smartwatch
In stock $72.00
Buy Now
Shop app
Amazfit GTS 4 Mini Smartwatch
In stock $103.99
Buy Now