| key specs |
| Strap Colour | Obsidian Black | Black, Magma Red, Neo Tropic, Whitestone |
| Compatible OS | Android, iOS | Android, iOS |
| Dial Shape | Round | Round |
| Display Type | AMOLED | MIP |
| Display Size | - | 30mm |
| Strap Material | - | Silicone |
| general |
| Brand | Amazfit | Garmin |
| Model | GTR 2 | Forerunner 745 |
| Release date | September 22, 2020 | September 16, 2020 |
| Model Name | GTR 2 | Forerunner 745 |
| Dial Shape | Round | Round |
| Size | Regular | Regular |
| Touchscreen | Yes | Yes |
| Water Resistant | 5 ATM | 5 ATM |
| Dial Material | Aluminium, Stainless Steel | - |
| Strap Colour | Obsidian Black | Black, Magma Red, Neo Tropic, Whitestone |
| Dial Colour | Obsidian Black, Silver | - |
| Strap Material | - | Silicone |
| dimensions |
| Width | 46.4 | 43.8 |
| Height | 46.4 | 43.8 |
| Thickness | 10.7 | 13.3 |
| Weight (g) | 39.00 | 47.00 |
| product details |
| Sensor | Air pressure, Accelerometer, Gyroscope, 3-axis Geomagnetic sensor, ambient light sensor | Glonass, Barometric altimeter, Compass, Gyroscope, Acceleraometer, Thermometer |
| Compatible Device | Android, iOS | Android, iOS |
| Notification | Yes | Yes |
| Battery Life | 14 | 7 hours |
| Charge Time | 2.5 hours | - |
| Charger Type | Magnetic | - |
| Rechargeable Battery | Yes | - |
| connectivity features |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | - |
| Wi-Fi | Yes | Yes |
| Other Connectivity Features | NFC, Wi-Fi | - |
| platform and storage features |
| Compatible Operating System | Android, iOS | Android, iOS |
| camera and display features |
| Display Resolution | 454x454 | 240x240 |
| Display Type | AMOLED | MIP |
| Display Size | - | 30mm |
| Scratch Resistant | - | Corning Gorilla Glass DX |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Compass | Yes | Yes |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Number of Buttons | 2 | 2 |
| Other Fitness Features | BioTracker 2 PPG, bioogical data sensor | - |
| Altimeter | - | Yes |
| Language | - | English |
| audio and video features |
| Speaker | Yes | - |
| Microphone | Yes | - |