| key specs |
| Strap Colour | Black, Dark Grey, Grey and Pink | Obsidian Black |
| Display Size | 36mm | - |
| Compatible OS | Android, iOS | Android, iOS |
| Strap Material | Silicone | - |
| Dial Shape | Round | Round |
| Display Type | AMOLED | AMOLED |
| general |
| Brand | Fire-Boltt | Amazfit |
| Model | Apollo 2 | GTR 2 |
| Release date | June 23, 2023 | September 22, 2020 |
| Model Number | BSW147 | - |
| Model Name | Fire-boltt Apollo 2 | GTR 2 |
| Dial Colour | Black | Obsidian Black, Silver |
| Dial Shape | Round | Round |
| Strap Colour | Black, Dark Grey, Grey and Pink | Obsidian Black |
| Strap Material | Silicone | - |
| Water Resistant | IP67 | 5 ATM |
| Size | - | Regular |
| Touchscreen | - | Yes |
| Dial Material | - | Aluminium, Stainless Steel |
| dimensions |
| Width | 43.5 mm | 46.4 |
| Height | 10 mm | 46.4 |
| Thickness | 10 mm | 10.7 |
| Diameter | 36.322 mm | - |
| Weight (g) | 100.00 | 39.00 |
| product details |
| Sensor | SpO2 sensor, Heart Rate tracker, Sleep tracker, Female health tracker | Air pressure, Accelerometer, Gyroscope, 3-axis Geomagnetic sensor, ambient light sensor |
| Compatible Device | Android, iOS | Android, iOS |
| Notification | Yes | Yes |
| Notification Type | Smart Notification | - |
| Battery Type | Lithium Ion | - |
| Charge Time | 2 hours | 2.5 hours |
| Charger Type | USB cable | Magnetic |
| Stand By Time | 20 days | - |
| Rechargeable Battery | Yes | Yes |
| Battery Life | - | 14 |
| connectivity features |
| Call Function | Yes | - |
| Bluetooth | Bluetooth | Yes |
| Bluetooth Version | Bluetooth 5.0 | 5.0 |
| Wi-Fi | - | Yes |
| Other Connectivity Features | - | NFC, Wi-Fi |
| platform and storage features |
| Compatible Operating System | Android, iOS | Android, iOS |
| camera and display features |
| Display Resolution | 466x466 pixels | 454x454 |
| Display Size | 36mm | - |
| Display Type | AMOLED | AMOLED |
| 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 | Activity Tracker, Breathe, 110 Sports Mode Tracking, Calorie Tracker, Sedentary Reminder, Sleep Monitor | BioTracker 2 PPG, bioogical data sensor |
| Other Watch Functions | Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, IP67 Rating, Music Player, Notifications | - |
| audio and video features |
| Speaker | - | Yes |
| Microphone | - | Yes |