| key specs |
| Strap Colour | Black, Orange, Yellow and Blue | Black |
| Display Size | 50mm | 33mm |
| Compatible OS | Android, iOS | Android, iOS |
| Strap Material | Silicone | Silicone |
| Dial Shape | Square | Rectangle |
| Ideal For | - | Unisex |
| general |
| Brand | Boult Audio | Fire-Boltt |
| Model | Crown | Ninja |
| Release date | July 13, 2023 | August 4, 2021 |
| Model Name | Crown | Ninja touch to Wake SpO2 |
| Dial Colour | Black | Black |
| Dial Shape | Square | Rectangle |
| Strap Colour | Black, Orange, Yellow and Blue | Black |
| Strap Material | Silicone | Silicone |
| Touchscreen | Yes | Yes |
| Water Resistant | IP67 | Yes |
| Dial Material | Metal | Metal |
| Model Number | - | BSW007 |
| Size | - | Regular |
| Water Resistance Depth | - | 1m |
| Ideal For | - | Unisex |
| dimensions |
| Height | 6mm | 34 |
| Width | - | 41 |
| Thickness | - | 10 |
| Diameter | - | 33 |
| Weight (g) | - | 80.00 |
| product details |
| Sensor | SpO2 sensor, Heart Rate tracker, Sleep tracker, Female health tracker | Accelerometer Sensor, Barometer Sensor, Gyro Sensor, Light Sensor, Optical Heart Rate Sensor, SpO2 Sensor, Blood Pressure Monitor |
| Compatible Device | Android, iOS | Android, iPhone |
| Notification | Yes | Yes |
| Notification Type | Smart Notification | - |
| Battery Type | Lithium Ion | Li-ion |
| Battery Life | 7 Days | 5 days |
| Charge Time | 2.5 hours | 120 minutes |
| Rechargeable Battery | Yes | Yes |
| Other Features | Inbuilt Alarm Clock, A Timer, A Stopwatch, Weather Monitoring, Sedentary Reminders And Inbuilt Mini Games | - |
| Stand By Time | - | 15 days |
| connectivity features |
| Call Function | Yes | No |
| Bluetooth | Bluetooth | Bluetooth |
| Bluetooth Version | Bluetooth 5.2 | 5.0 |
| Messaging Support | - | Yes |
| Operating Range | - | 10m |
| Third Party App Support | - | Limited |
| platform and storage features |
| Compatible Operating System | Android, iOS | Android, iOS |
| camera and display features |
| Display Resolution | 240 x 283 | 240x240 |
| Display Size | 50mm | 33mm |
| Other Display Features | 900 nits brightness | - |
| Backlight Display | - | Yes |
| Scratch Resistant | - | Yes |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Number of Buttons | 2 | - |
| Other Fitness Features | Activity Tracker, Breathe, Sedentary Reminder, Sleep Monitor, 100 sports modes | 7 sports modes |
| Other Watch Functions | Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, Notifications, 150+ watch faces, Find My Feature | - |
| Chronograph | - | No |
| Language | - | English |
| audio and video features |
| Speaker | Yes | - |
| Microphone | Yes | - |