| key specs |
| Strap Colour | Black Fluororubber, Brown Leather | Grey | Obsidian Black |
| Dial Shape | Round | Round | Round |
| Display Type | AMOLED | AMOLED | AMOLED |
| Ideal For | Unisex | Unisex | - |
| Display Size | - | 38mm | - |
| Compatible OS | - | Android and iOS | Android, iOS |
| Strap Material | - | Silicone | - |
| general |
| Brand | Amazfit | Amazfit | Amazfit |
| Model | GTR 4 New | Balance | GTR 2 |
| Release date | September 4, 2024 | - | September 22, 2020 |
| Model Name | GTR 4 New | Balance | GTR 2 |
| Dial Shape | Round | Round | Round |
| Strap Colour | Black Fluororubber, Brown Leather | Grey | Obsidian Black |
| Size | Regular | Regular | Regular |
| Touchscreen | 1.45 | Yes | Yes |
| Water Resistant | 5 ATM | Yes | 5 ATM |
| Usage | Regular | Fitness & Outdoor | - |
| Dial Material | Stainless Steel | - | Aluminium, Stainless Steel |
| Ideal For | Unisex | Unisex | - |
| Model Number | - | A2287 | - |
| Dial Colour | - | Midnight | Obsidian Black, Silver |
| Strap Material | - | Silicone | - |
| Water Resistance Depth | - | 50 m | - |
| dimensions |
| Width | 46.5 | 46 | 46.4 |
| Height | 46.5 | 46 | 46.4 |
| Thickness | 11.2 | 10.6 | 10.7 |
| Weight (g) | 49.00 | 35.00 | 39.00 |
| product details |
| Sensor | heart rate, SpO2, steps, sleep tracker | Biometric Sensor, Acceleration Sensor, Gyroscope, Geomagnetic Sensor, Air Pressure Sensor, Ambient Light Sensor, Temperature Sensor | Air pressure, Accelerometer, Gyroscope, 3-axis Geomagnetic sensor, ambient light sensor |
| Compatible Device | Android 7.0 and above, iOS 12.0 and above | Android, iOS | Android, iOS |
| Battery Type | 475 | Lithium Polymer | - |
| Battery Life | 12 days | 14 Days | 14 |
| Rechargeable Battery | Yes | Yes | Yes |
| Notification | - | Calendar Reminder, Call Notification, Sedentary Reminders, Smartphone Apps Notifications | Yes |
| Notification Type | - | Vibration | - |
| Charge Time | - | 2 hours | 2.5 hours |
| Charger Type | - | - | Magnetic |
| connectivity features |
| Call Function | Yes | Yes | - |
| Bluetooth | Yes | Yes | Yes |
| Bluetooth Version | 5.0 | 5 | 5.0 |
| Wi-Fi | Yes | - | Yes |
| GPS | Yes | Yes | - |
| Operating Range | - | 10 | - |
| Third Party App Support | - | Yes | - |
| Call Features | - | No | - |
| Other Connectivity Features | - | - | NFC, Wi-Fi |
| platform and storage features |
| Operating System | ZeppOS 2.0 | Zepp OS 3.0 | - |
| Compatible Operating System | - | Android and iOS | Android, iOS |
| camera and display features |
| Display Resolution | 466 x 466 | 480x480 | 454x454 |
| Display Type | AMOLED | AMOLED | AMOLED |
| Display Size | - | 38mm | - |
| Backlight Display | - | Yes | - |
| Scratch Resistant | - | Yes | - |
| Other Display Features | - | Always-on Display | - |
| fitness and watch functions |
| Step Count | Yes | Yes | Yes |
| Heart Rate Monitor | Yes | Yes | Yes |
| Altimeter | Yes | - | - |
| Date & Time Display | Yes | Yes | Yes |
| Language | English | English | - |
| Number of Buttons | 2 | 2 | 2 |
| Other Fitness Features | Menstrual health tracker | Blood-oxygen Saturation Measurement,Monitoring of Heart Rate, Sleep and Sports Data | BioTracker 2 PPG, bioogical data sensor |
| Calorie Count | - | Yes | Yes |
| Compass | - | Yes | Yes |
| Calendar | - | Yes | Yes |
| Alarm Clock | - | Yes | Yes |
| Chronograph | - | Yes | - |
| Other Watch Functions | - | Bluetooth Phone Call;Weather;Multiple Sports Modes;Sleep Monitor;Heart Rate Monitor; Mobile Phone Music Control; Mobile Phone Camera Control; Find My Phone | - |
| audio and video features |
| Speaker | Yes | - | Yes |
| Microphone | Yes | - | Yes |
| Gesture Control | - | Yes | - |
| Voice Control | - | No | - |