| key specs |
| Strap Colour | Black, Blue, Teal | Black, Blue, Gold, Red, Silver |
| Display Size | 50mm | - |
| Dial Shape | Square | Square |
| Display Type | Super AMOLED | - |
| Strap Material | - | Silicone |
| Ideal For | - | Unisex |
| general |
| Brand | Fastrack | Fire-Boltt |
| Model | Revoltt FS1 Pro | Ninja Call 2 |
| Release date | April 24, 2023 | March 1, 2022 |
| Model Name | Revoltt FS1 Pro | Fire-Boltt Ninja Call 2 |
| Dial Shape | Square | Square |
| Strap Colour | Black, Blue, Teal | Black, Blue, Gold, Red, Silver |
| Water Resistant | IP68 | Yes |
| Dial Colour | - | Black |
| 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 | - |
| Compatible Device | - | Android, iOS |
| Battery Life | - | 10 Days |
| connectivity features |
| Call Function | Yes | Yes |
| Bluetooth | Bluetooth | Yes |
| Bluetooth Version | - | 5 |
| Call Features | - | calling |
| Other Connectivity Features | - | Smart notifications |
| camera and display features |
| Display Resolution | 410 X 502 | 240x288 |
| Display Size | 50mm | - |
| 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 | Meditative breathing, sleep tracking, drink water reminders |
| Other Watch Functions | Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, IP68 Rating | Stopwatch, sedentary reminders |
| Alarm Clock | - | Yes |
| Date & Time Display | - | Yes |
| Language | - | English |
| Number of Buttons | - | 1 |
| audio and video features |
| Other Multimedia Features | - | Music control |