| key specs |
| Strap Colour | Black, Dark Grey, Grey and Pink | Black, Blue, Teal |
| Display Size | 36mm | 50mm |
| Compatible OS | Android, iOS | - |
| Strap Material | Silicone | - |
| Dial Shape | Round | Square |
| Display Type | AMOLED | Super AMOLED |
| general |
| Brand | Fire-Boltt | Fastrack |
| Model | Apollo 2 | Revoltt FS1 Pro |
| Release date | June 23, 2023 | April 24, 2023 |
| Model Number | BSW147 | - |
| Model Name | Fire-boltt Apollo 2 | Revoltt FS1 Pro |
| Dial Colour | Black | - |
| Dial Shape | Round | Square |
| Strap Colour | Black, Dark Grey, Grey and Pink | Black, Blue, Teal |
| Strap Material | Silicone | - |
| Water Resistant | IP67 | IP68 |
| dimensions |
| Width | 43.5 mm | - |
| Height | 10 mm | - |
| Thickness | 10 mm | - |
| Diameter | 36.322 mm | - |
| Weight (g) | 100.00 | - |
| product details |
| Sensor | SpO2 sensor, Heart Rate tracker, Sleep tracker, Female health tracker | Heart Rate tracker |
| Compatible Device | Android, iOS | - |
| Notification | Yes | Yes |
| Notification Type | Smart Notification | Smart Notification |
| Battery Type | Lithium Ion | - |
| Charge Time | 2 hours | - |
| Charger Type | USB cable | - |
| Stand By Time | 20 days | - |
| Rechargeable Battery | Yes | Yes |
| Other Features | - | Activity Tracker, Heart Rate Tracking, Bluetooth Calling , Voice Assistance, 110+ Sports Mode Tracking, In Built Mic & Speaker,IP68 Rating, Sleep Monitor, Fast charging |
| connectivity features |
| Call Function | Yes | Yes |
| Bluetooth | Bluetooth | Bluetooth |
| Bluetooth Version | Bluetooth 5.0 | - |
| platform and storage features |
| Compatible Operating System | Android, iOS | - |
| camera and display features |
| Display Resolution | 466x466 pixels | 410 X 502 |
| Display Size | 36mm | 50mm |
| Display Type | AMOLED | Super AMOLED |
| Other Display Features | - | Always-on Display |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | - |
| Heart Rate Monitor | Yes | Yes |
| Compass | Yes | - |
| Calendar | Yes | - |
| Alarm Clock | Yes | - |
| Date & Time Display | Yes | - |
| Number of Buttons | 2 | - |
| Other Fitness Features | Activity Tracker, Breathe, 110 Sports Mode Tracking, Calorie Tracker, Sedentary Reminder, Sleep Monitor | Activity Tracker, 110 Sports Mode Tracking |
| Other Watch Functions | Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, IP67 Rating, Music Player, Notifications | Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, IP68 Rating |