In depth comparison and review of Amazfit GTS 4 and Apple Watch Ultra 2. Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.
| GENERAL | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | Zepp OS | WatchOS 10 |
| Supported Host Device OS | iOS 12 or later, Android 7.0 (Nougat) or later | iOS 17 or later |
| Activity/Sport | Multisport | Multisport, custom workouts |
| Wearing Style | Watch style | Watch style |
| Audio Input | Microphone | Three-microphone array |
| Audio Output | Speaker | Dual speakers |
| Width | 36.5 mm | - |
| Height | 42.7 mm | - |
| Depth | 9.9 mm | - |
| Weight | 27 g | - |
| Body Details | - | Case only: 61.4 g |
| Body Material | Stainless steel, aluminium alloy frame | Aerospace-grade titanium |
| Protection | Water-resistant | Water-resistant, splash-resistant, corrosion resistant, dust-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Sensors | Accelerometer, ambient light sensor, geomagnetic sensor, barometric altimeter, gyroscope, BioTracker PPG 4.0 biometric sensor | Accelerometer, ambient light sensor, digital compass, depth gauge, electrical heart sensor, ECG sensor, blood oxygen sensor, gyroscope, water temperature sensor, temperature sensing, optical heart sensor (3d gen), always-on altimeter |
|---|---|---|
| Tracking Data | Time, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, sleep stages, stress level, menstrual cycle, personal activity intelligence (PAI), recovery time, training load, sleep quality score, nap, sleep breathing quality | Distance, time, calories burned, activity, sleep activity, heart rate, blood oxygen saturation, sleep stages, menstrual cycle, ECG, ovulation phase, rapid eye movement (REM), depth |
| Modes | 154 sports modes | Night mode |
| Goal Setting | Yes | Yes |
| Features | Strength training guidance, camera remote control, find phone function, answering a call, VO2 max, making a call, Find my Device, breathing training function, store & play music, sunrise/sunset times, auto pause, auto lap, realtime location tracking, music playback control, weather information, instant message reply, PeakBeats workout status algorithm, ExerSense algorithm, Dual-band navigation, linear motor, Virtual Pacer, track run mode, smart trajectory correction, route file import | Call handling, store & play music, Fall detection, Emergency SOS, heart rate zones, Family Setup support, International Emergency Calling, Siren (86-decibel), Crash Detection, noise monitoring, Compass Waypoint, precision finding for iPhone, brightness: 3000 nits, flashlight boost, track detection |
| Notifications | SMS, incoming calls, applications, high and low heart rate, low blood-oxygen, high stress level | Calendar, SMS, Email, high and low heart rate, irregular rhythm, cardio fitness |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Audio alert, vibration alert, visual interface | Audio alert, vibration alert, visual interface |
| Navigation (GPS) | - | GPS/GLONASS/Galileo/BeiDou/QZSS receiver |
| Payment Technology | - | Apple Pay |
| Internet of Things (IoT) Compatible | Yes | Yes |
| IoT Intelligent Assistant | Alexa built-in | Siri |
| IoT Voice Controlled | Direct | Direct |
| CELLULAR | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Technology | - | WCDMA (UMTS) |
|---|---|---|
| Mobile Broadband Generation | - | 4G |
| SIM Card Type | - | Electronic SIM card (e-SIM) |
| CONNECTIVITY | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| 3M UMTS Band | - | Band 1, Band 2, Band 5, Band 10 |
|---|---|---|
| 4G LTE Band | - | Band 1, Band 2, Band 3, Band 4, Band 5, Band 6, Band 7, Band 8, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 39, Band 40, Band 41, Band 66 |
| Wireless Interface | Wi-Fi, Bluetooth 5.0 | IEEE 802.11b/g/n, LTE, Ultra-Wideband (UWB), Bluetooth 5.3 |
| DISPLAY | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Type | AMOLED - colour | Retina LTPO OLED - colour |
|---|---|---|
| Resolution | 390 x 450 pixels | 410 x 502 pixels |
| Screen Size | 1.75" | - |
| Pixel Density | 341 ppi | - |
| Screen Protection | Tempered glass | Flat sapphire front crystal with display edge protection |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Type | Touch sensitive screen, push button | Touch sensitive screen, customisable action button, side button, double tap gesture |
|---|
| CASE | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Case Size | - | 49 mm |
|---|---|---|
| Case Shape | Rectangular | Rectangular |
| Case Details | Aluminium alloy | Titanium |
| Crown Type | - | Digital with haptic feedback |
| BAND | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Band Type | Strap | Alpine Loop |
|---|---|---|
| Band Size | - | S |
| Band Width | 20 mm | - |
| Fits Wrist with Circumference | 140-200 mm | 130-160 mm |
| Changeable | Yes | Yes |
| Clasp Type | Pin buckle | G-hook |
| Band Material | Fluoroelastomer | Textile |
| Band Colour | Infinite black | Misty white | Rosebud pink | Blue | Indigo | Olive | Orange/beige | Green/gray | Blue/black | Orange | White |
| STORAGE | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Storage Capacity | - | 64 GB |
|---|---|---|
| User Memory | 2.3 GB | - |
| CPU | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Manufacturer | - | Apple |
|---|---|---|
| CPU Type | - | S9 SiP |
| Features | - | W3 Apple wireless chip, second-generation Ultra Wideband chip, 4-core Neural Engine |
| BATTERY | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Technology | - | Lithium Ion |
|---|---|---|
| Capacity | 300 mAh | - |
| Battery Life | - | 36 hours |
| Battery Life Details | Typical usage - up to 8 days Battery Saver Watch Mode - up to 16 days Clock - up to 30 days Heavy usage - up to 4 days Accurate mode (with GPS) - up to 16 hours GPS mode - up to 28 hours Power saving mode (with GPS) - up to 33 hours |
Normal use - up to 36 hour(s) Low power mode - up to 18 hour(s) Power saving mode - up to 72 hour(s) |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | 2 hour(s) | - |
| Wireless Charging | - | Yes |
| MISCELLANEOUS | Amazfit GTS 4 | Apple Watch Ultra 2 |
|---|
| Included Accessories | Magnetic charging cable | Magnetic fast charger to USB-C cable (1 m) |
|---|---|---|
| Preloaded Software | To Do List, Games, Stopwatch, Calendar, World clock, Alarm Clock, Reminders, Timer, Compass, Countdown timer | GymKit, Oceanic+, Depth app |
| Compliant Standards | - | IP6X, BFR-free, PVC-free, Beryllium-free, Mercury-free, MIL-STD-810H, EN13319, Arsenic-free |
| Specific Absorption Rate (SAR) | - | 0.22 W/kg (head) 0.43 W/kg (limb) |
| Carbon Footprint | - | 0 kg carbon emissions |
| Max Depth of Water Resistance | 50 m | 100 m |
| Max Operating Temperature | 45 °C | 55 °C |
| Min Operating Temperature | 0 °C | -20 °C |
| Manufacturer Model Number | - | A2986 |
| Warranty | 1-year warranty | - |
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