| key specs | 
| Strap Colour | Gold black, Gunpowder black, Orange gold, Camo-green, Camo-black, Black, Silver, and Gold | Black, Silver, Gold, Active Black, Brown | 
| Display Size | 36mm | 36mm | 
| Compatible OS | Android, iOS | Android, iOS | 
| Strap Material | Silicone | Stainless Steel | 
| Dial Shape | Round | Round | 
| general | 
| Brand | Fire-Boltt | Fire-Boltt | 
| Model | Grenade | Ultimate | 
| Release date | June 28, 2023 | June 19, 2023 | 
| Model Name | Fire-Boltt Grenade Smartwatch | Ultimate | 
| Dial Colour | Black | Black | 
| Dial Shape | Round | Round | 
| Strap Colour | Gold black, Gunpowder black, Orange gold, Camo-green, Camo-black, Black, Silver, and Gold | Black, Silver, Gold, Active Black, Brown | 
| Strap Material | Silicone | Stainless Steel | 
| Water Resistant | Yes | IP68 | 
| Model Number | - | BSW158 | 
| Touchscreen | - | Yes | 
| product details | 
| Sensor | SpO2 sensor, Heart Rate tracker, Sleep tracker, Female health tracker | SPO2, Heart Rate Tracking, women health tracker | 
| Compatible Device | Android, iOS | Android, iOS | 
| Notification | Yes | Yes | 
| Notification Type | Smart Notification | Calls, Sms, Whatsapp and Social Media | 
| Talk time | 2 days | - | 
| Battery Life | 7 days | 7 days | 
| Rechargeable Battery | Yes | Yes | 
| Other Features | 350mAh battery | - | 
| Battery Type | - | Lithium Ion | 
| Charge Time | - | 2 hours | 
| Stand By Time | - | 20 days | 
| connectivity features | 
| Call Function | Yes | Yes | 
| Bluetooth | Bluetooth | Bluetooth | 
| Bluetooth Version | - | Bluetooth 5.0 | 
| platform and storage features | 
| Compatible Operating System | Android, iOS | Android, iOS | 
| camera and display features | 
| Display Resolution | 360x360 pixels | 240 x 240 pixels | 
| Display Size | 36mm | 36mm | 
| 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 | - | 
| Number of Buttons | 2 Pusher buttons | 2 | 
| Other Fitness Features | Activity Tracker, Breathe, Voice Assistance, 123 Sports Mode Tracking, Calorie Tracker, Daily Workout Memory, Sedentary Reminder, Sleep Monitor | Activity Tracker, 123 Sports Mode Tracking, Sedentary Reminder, Sleep Monitor, Women health tracker | 
| Other Watch Functions | Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, Calculator, Music Player, In-built games | Music Control, Remote Camera Control, Alarm, Timer, Stopwatch, Weather Forecast, Support For Multiple Watch Faces, A Rotating Crown Button | 
| audio and video features | 
| Speaker | Yes | - | 
| Microphone | Yes | - | 
| Voice Control | Google Assistant, Siri | - | 
| Other Multimedia Features | Music control | - | 
| dimensions | 
| Width | - | 46.6mm | 
| Height | - | 50.6mm | 
| Thickness | - | 10.4mm | 
| Diameter | - | 35.3mm | 
| Weight (g) | - | 80.00 |