| key specs |
| Strap Colour | Gold black, Gunpowder black, Orange gold, Camo-green, Camo-black, Black, Silver, and Gold | Frozen Silver, Thunder Black, and Volcanic Orange |
| Display Size | 36mm | 36mm |
| Compatible OS | Android, iOS | Android, iOS |
| Strap Material | Silicone | - |
| Dial Shape | Round | Round |
| Display Type | - | Super AMOLED |
| general |
| Brand | Fire-Boltt | Boult Audio |
| Model | Grenade | Crown R PRO |
| Release date | June 28, 2023 | June 19, 2023 |
| Model Name | Fire-Boltt Grenade Smartwatch | Crown R Pro |
| Dial Colour | Black | Black |
| Dial Shape | Round | Round |
| Strap Colour | Gold black, Gunpowder black, Orange gold, Camo-green, Camo-black, Black, Silver, and Gold | Frozen Silver, Thunder Black, and Volcanic Orange |
| Strap Material | Silicone | - |
| Water Resistant | Yes | IP67 |
| product details |
| Sensor | SpO2 sensor, Heart Rate tracker, Sleep tracker, Female health tracker | SpO2 sensor, Heart Rate tracker, Sleep tracker, Female health tracker |
| Compatible Device | Android, iOS | Android, iOS |
| Notification | Yes | Yes |
| Notification Type | Smart Notification | Smart Notification |
| Talk time | 2 days | - |
| Battery Life | 7 days | 5 Days |
| Rechargeable Battery | Yes | Yes |
| Other Features | 350mAh battery | - |
| Battery Type | - | Lithium Ion |
| Charge Time | - | 2.5 hours |
| Charger Type | - | Magnetic Charger |
| connectivity features |
| Call Function | Yes | - |
| Bluetooth | Bluetooth | Bluetooth |
| Bluetooth Version | - | Bluetooth 5.2 |
| platform and storage features |
| Compatible Operating System | Android, iOS | Android, iOS |
| camera and display features |
| Display Resolution | 360x360 pixels | 466x466 pixels |
| Display Size | 36mm | 36mm |
| Display Type | - | Super AMOLED |
| Other Display Features | - | 600 nits brightness, Always-on Display |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Compass | Yes | - |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Chronograph | Yes | - |
| Date & Time Display | Yes | Yes |
| Number of Buttons | 2 Pusher buttons | 1 |
| Other Fitness Features | Activity Tracker, Breathe, Voice Assistance, 123 Sports Mode Tracking, Calorie Tracker, Daily Workout Memory, Sedentary Reminder, Sleep Monitor | Activity Tracker, Breathe, Voice Assistance, Sedentary Reminder, Sleep Monitor, 123+ sports modes |
| Other Watch Functions | Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, Calculator, Music Player, In-built games | Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, Music Player, Notifications, Phone Call, 150+ watch faces, Find My Feature |
| audio and video features |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| Voice Control | Google Assistant, Siri | - |
| Other Multimedia Features | Music control | - |
| dimensions |
| Width | - | 47 |
| Height | - | 46 |
| Thickness | - | 13 |
| Weight (g) | - | 56.50 |