| key specs |
| Strap Colour | Black, Orange, Yellow and Blue | Black, Dark Green, Rose Gold |
| Display Size | 50mm | 38mm |
| Compatible OS | Android, iOS | - |
| Strap Material | Silicone | - |
| Dial Shape | Square | Rectangle |
| Ideal For | - | Unisex |
| general |
| Brand | Boult Audio | Fire-Boltt |
| Model | Crown | Ninja 2 Max |
| Release date | July 13, 2023 | January 18, 2022 |
| Model Name | Crown | Ninja 2 Max |
| Dial Colour | Black | Black, Dark Green, Rose Gold |
| Dial Shape | Square | Rectangle |
| Strap Colour | Black, Orange, Yellow and Blue | Black, Dark Green, Rose Gold |
| Strap Material | Silicone | - |
| Touchscreen | Yes | Yes |
| Water Resistant | IP67 | - |
| Dial Material | Metal | - |
| Model Number | - | BSW022 |
| Interchangeable Strap | - | Yes |
| Ideal For | - | Unisex |
| dimensions |
| Height | 6mm | 37 |
| Width | - | 43 |
| Thickness | - | 9 |
| Weight (g) | - | 32.00 |
| product details |
| Sensor | SpO2 sensor, Heart Rate tracker, Sleep tracker, Female health tracker | Heart Rate Sensor, SpO2 Sensor, Sleep Sensor |
| Compatible Device | Android, iOS | Android, iOS |
| Notification | Yes | Yes |
| Notification Type | Smart Notification | - |
| Battery Type | Lithium Ion | Lithium-ion |
| Battery Life | 7 Days | 7 days |
| Charge Time | 2.5 hours | - |
| Rechargeable Battery | Yes | Yes |
| Other Features | Inbuilt Alarm Clock, A Timer, A Stopwatch, Weather Monitoring, Sedentary Reminders And Inbuilt Mini Games | - |
| Stand By Time | - | 25 days |
| connectivity features |
| Call Function | Yes | - |
| Bluetooth | Bluetooth | Bluetooth |
| Bluetooth Version | Bluetooth 5.2 | - |
| platform and storage features |
| Compatible Operating System | Android, iOS | - |
| camera and display features |
| Display Resolution | 240 x 283 | 240x280 |
| Display Size | 50mm | 38mm |
| Other Display Features | 900 nits brightness | - |
| Backlight Display | - | Yes |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | - |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Number of Buttons | 2 | 1 |
| Other Fitness Features | Activity Tracker, Breathe, Sedentary Reminder, Sleep Monitor, 100 sports modes | 20 sports modes |
| Other Watch Functions | Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, Notifications, 150+ watch faces, Find My Feature | - |
| Chronograph | - | Yes |
| Language | - | English |
| audio and video features |
| Speaker | Yes | - |
| Microphone | Yes | - |