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The Amazfit GTS 4 is a fitness-first smartwatch with a 1.75-inch AMOLED display, dual-band GPS, broad activity tracking and a more limited app ecosystem than full smartwatch platforms. Amazfit rates its battery for up to eight days in typical use, but that is a manufacturer estimate, not a guarantee. Independent reviews praised its features and value while reporting inconsistent heart-rate tracking and some GPS distance underreporting.
It may suit buyers who want a lightweight-looking square watch and a wide range of fitness features, but people who prioritize dependable heart-rate data or mainstream third-party apps should weigh those trade-offs. The research for this review draws on Amazfit’s specifications and manual, plus review findings from Wareable and Tech Advisor; it does not include fresh hands-on testing.
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Amazfit Bip 6 Smart Watch, 1.97" AMOLED Display, GPS, iOS/Android | $79.00 | Buy on Amazon |
Amazfit GTS 4 specifications
| Specification | Details |
|---|---|
| Case dimensions | 42.7 × 36.5 × 9.9 mm, according to Amazfit |
| Display | 1.75-inch AMOLED, 390 × 450 resolution, 341 PPI |
| Battery | 300 mAh; Amazfit estimates up to 8 days typical use and up to 4 days heavy use |
| GPS battery estimates | Up to 16 hours in accuracy mode, 28 hours in balanced mode and 33 hours in power-saving mode |
| Positioning | Dual-band positioning; Amazfit lists six satellite systems and notes that support for one system may require an OTA update |
| Water resistance | 5 ATM, per Amazfit |
| Band | 20 mm quick-release strap |
| Software and connectivity | Zepp OS 2.0, Zepp phone app, Bluetooth 5.0/BLE, microphone and speaker |
| Health sensor | BioTracker 4.0 optical sensor, per Amazfit |
Specifications above come from Amazfit’s product page and manual. Features, satellite support and availability can vary by region or software version.
Fitness tracking and GPS
Amazfit advertises more than 150 sports modes, along with features including strength-exercise recognition, selected automatic activity detection, workout status and route import/navigation. These are manufacturer-listed capabilities; the number of modes alone does not establish the accuracy or depth of tracking for every activity.
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- STYLISH DESIGN, VIBRANT DISPLAY: The lightweight aluminum build blends effortless style with workout durability, while the vivid 1.97" AMOLED display keeps your data easy to read, even under bright sunlight.
- ALL-IN-ONE ACTIVITY TRACKING: The Amazfit Bip 6 fitness tracker watch offers 140+ workout modes including HYROX Race and Strength Training, plus personalized AI coaching and 50m water resistance.
- UP TO 14 DAYS BATTERY LIFE: The Amazfit Bip 6 smart watch powers through your training and recovery for up to two weeks at a time - no nightly charging needed.
- ACCURATE GPS TRACKING & NAVIGATION: Stay on course with free downloadable maps and turn-by-turn directions. Support from 5 satellite systems ensures precise tracking of every move and fast GPS connection.
- 24/7 HEALTH MONITORING: The Amazfit Bip 6 smartwatch provides precise, real-time monitoring of heart rate, sleep, blood-oxygen and stress, empowering you with actionable insights to optimize your health and fitness.
Wareable found that GTS 4 GPS routes almost always roughly matched a Garmin Forerunner 955 Solar, but also observed a tendency for the watch to underreport distance. In its five listed runs, the reviewer reported undercounts ranging from 0.01 to 0.15 miles over routes of 3 to 11.2 miles. Those are one reviewer’s test results, not a universal accuracy guarantee.
Heart-rate performance deserves similar caution. Wareable cited inconsistent heart-rate tracking as a drawback, while Tech Advisor said the tracking software did not match rivals. If precise heart-rate readings are central to your training, treat the GTS 4’s wrist readings cautiously rather than assuming they will match a chest strap.
Battery life and charging
Amazfit’s stated battery estimates are up to eight days in typical use and up to four days in heavy use. For GPS, Amazfit lists up to 16 hours in accuracy mode, 28 hours in balanced mode and 33 hours in power-saving mode. These figures describe manufacturer scenarios; actual endurance depends on settings and use.
The watch uses magnetic charging, according to Amazfit. The official manual also describes transferring MP3 music from a phone to the watch for playback through its speaker or a Bluetooth audio device.
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The GTS 4 runs Zepp OS 2.0 and pairs with the Zepp app. Amazfit lists Alexa, an offline voice assistant, Bluetooth phone calls, notifications and local music among its features. Bluetooth calling and notifications require the watch to remain connected to the phone, according to the user manual; Android users may need to allow the Zepp app to run in the background for notifications.
Its app ecosystem is a notable limitation compared with platforms that offer familiar third-party services such as Spotify. Tech Advisor described Zepp OS as lacking third-party apps such as Spotify. The official manual documents Bluetooth audio-device playback, while a Tech Advisor review reported a different experience with Bluetooth earphones in its tested context. Actual behavior may depend on software version and setup.
Design, display and water resistance
Amazfit lists a 42.7 × 36.5 × 9.9 mm case and a 1.75-inch AMOLED screen. Wareable described the watch as feature-rich and good value; Tech Advisor praised its premium feel. Those are reviewers’ impressions, not a guarantee of fit or finish for every buyer. The listed 20 mm quick-release strap gives buyers a standard size to check when shopping for replacement bands.
Amazfit rates the watch at 5 ATM water resistance. That rating should not be treated as a blanket guarantee for every water activity; follow the manufacturer’s user guidance for use and care.
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Price and value
Amazfit announced a US launch price of $199.99 in 2022, with availability announced from September 2, 2022. That is historical launch pricing, not a current-price quote. Check the current price and stock before buying.
Wareable’s verdict called it “A better fitness tracker than a smartwatch, but still a gem for the price.” That captures the central trade-off: a broad fitness feature set and dual-band GPS, balanced against reported heart-rate inconsistency and a smaller app ecosystem. Tech Advisor also praised battery life but said tracking software did not match rivals.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How it compares with the Amazfit GTR 4
| Feature | Amazfit GTS 4 | Amazfit GTR 4 |
|---|---|---|
| Style | Square design | Round design |
| Band width | 20 mm | 22 mm |
| Typical-use battery estimate | Up to 8 days | Up to 14 days |
| GPS battery estimates | Up to 16/28/33 hours across accuracy, balanced and power-saving modes | Longer estimates than GTS 4, as listed in the comparison |
These are stated specifications reported in Android Central’s comparison, not independent endurance-test results. Choose between them primarily by shape, band size and the manufacturer’s battery estimates.
Verdict: should you buy the Amazfit GTS 4?
The GTS 4 is worth considering if you want a square AMOLED fitness watch with broad activity features, dual-band GPS and manufacturer-rated multi-day battery life. It is less compelling if you need a rich third-party app selection or want to rely on its wrist-based heart-rate tracking for precise training decisions.
Before buying, compare its current price with alternatives and check which features are supported in your region and software version. The Wareable and Tech Advisor reviews provide useful independent context, but their findings should not be mistaken for fresh tests.
FAQ
How long does the Amazfit GTS 4 battery last?
Amazfit estimates up to eight days in typical use and up to four days in heavy use. These are manufacturer figures, and actual battery life varies with settings and usage.
How accurate is the Amazfit GTS 4 GPS?
Wareable reported route traces broadly similar to a Garmin Forerunner 955 Solar in its tests, with some slight distance underreporting. That finding describes the reviewer’s tests, not every watch or route.
Is the Amazfit GTS 4 heart-rate tracking reliable?
Wareable listed inconsistent heart-rate tracking as a drawback, and Tech Advisor said its tracking software did not match rivals. If you need precise readings for training, do not assume wrist readings will be equivalent to a chest strap.
Can the Amazfit GTS 4 make phone calls?
Amazfit lists Bluetooth phone calls as a feature. The manual says calling requires the watch and phone to remain connected.
Does the Amazfit GTS 4 support Spotify?
Tech Advisor reported that Zepp OS lacked third-party apps such as Spotify. Amazfit and its manual describe local music playback, which is different from having a Spotify app on the watch.
What size replacement strap fits the GTS 4?
Amazfit specifies a 20 mm quick-release strap. Check that a replacement listing explicitly fits the GTS 4, rather than the GTS 4 Mini or another generation.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
