| key specs |
| Strap Colour | Black, Blue, Teal | Black, Blue, Gold, Green, Grey, Pink, Purple |
| Display Size | 50mm | 43mm |
| Dial Shape | Square | Square |
| Display Type | Super AMOLED | - |
| Strap Material | - | Silicone |
| Ideal For | - | Unisex |
| general |
| Brand | Fastrack | Fire-Boltt |
| Model | Revoltt FS1 Pro | Ninja Bell |
| Release date | April 24, 2023 | June 1, 2022 |
| Model Name | Revoltt FS1 Pro | Fire-Boltt Ninja Bell |
| Dial Shape | Square | Square |
| Strap Colour | Black, Blue, Teal | Black, Blue, Gold, Green, Grey, Pink, Purple |
| Water Resistant | IP68 | Yes |
| Model Number | - | BSW040 |
| Dial Colour | - | Gold |
| Strap Material | - | Silicone |
| Size | - | Regular |
| Touchscreen | - | Yes |
| Usage | - | Fitness & Outdoor |
| Ideal For | - | Unisex |
| product details |
| Sensor | Heart Rate tracker | SpO2 Monitoring, Heart Rate Monitor, Optical Heart Rate Sensor |
| Notification | Yes | Call, Text, Social Media |
| Notification Type | Smart Notification | - |
| 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 | - |
| Closure | - | Strap Buckle |
| Compatible Device | - | Android, iOS |
| Stand By Time | - | 25 Days |
| connectivity features |
| Call Function | Yes | Yes |
| Bluetooth | Bluetooth | Yes |
| Call Features | - | Reject Calls, Take Calls, Speed Dial, Save Contacts, Call History, Calling Support via inbuilt Mic and Speaker |
| Other Connectivity Features | - | Smart notifications |
| camera and display features |
| Display Resolution | 410 X 502 | 240x280 |
| Display Size | 50mm | 43mm |
| Display Type | Super AMOLED | - |
| Other Display Features | Always-on Display | Touch Screen |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Other Fitness Features | Activity Tracker, 110 Sports Mode Tracking | Sleep tracking |
| Other Watch Functions | Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, IP68 Rating | Sedentary reminders |
| Alarm Clock | - | Yes |
| Chronograph | - | Yes |
| Date & Time Display | - | Yes |
| Language | - | English |
| Number of Buttons | - | 1 |
| dimensions |
| Width | - | 44.17 |
| Height | - | 35.78 |
| Thickness | - | 11.6 |
| Diameter | - | 43 |
| Weight (g) | - | 51.00 |