| key specs |
| Strap Colour | Gold black, Gunpowder black, Orange gold, Camo-green, Camo-black, Black, Silver, and Gold | Black |
| Display Size | 36mm | 44mm |
| Compatible OS | Android, iOS | iOS 10.0 and Above / Android 5.0 and Above |
| Strap Material | Silicone | Silicone |
| Dial Shape | Round | Square |
| Ideal For | - | Unisex |
| general |
| Brand | Fire-Boltt | Zebronics |
| Model | Grenade | Zeb-Fit7220CH |
| Release date | June 28, 2023 | September 20, 2021 |
| Model Name | Fire-Boltt Grenade Smartwatch | Fit7220CH |
| Dial Colour | Black | Black |
| Dial Shape | Round | Square |
| Strap Colour | Gold black, Gunpowder black, Orange gold, Camo-green, Camo-black, Black, Silver, and Gold | Black |
| Strap Material | Silicone | Silicone |
| Water Resistant | Yes | IP67 |
| Size | - | Large |
| Touchscreen | - | Yes |
| Dial Material | - | Metal |
| Ideal For | - | Unisex |
| product details |
| Sensor | SpO2 sensor, Heart Rate tracker, Sleep tracker, Female health tracker | Heart Rate monitor, SpO2, Blood pressure |
| Compatible Device | Android, iOS | iPhone, Android phones |
| Notification | Yes | Yes |
| Notification Type | Smart Notification | Third party app |
| Talk time | 2 days | - |
| Battery Life | 7 days | - |
| Rechargeable Battery | Yes | Rechargeable Battery |
| Other Features | 350mAh battery | - |
| Battery Type | - | 210mAh |
| Charge Time | - | 1.5–2 hours |
| Stand By Time | - | 30 days |
| connectivity features |
| Call Function | Yes | Yes |
| Bluetooth | Bluetooth | Yes |
| Bluetooth Version | - | v5.0 |
| Third Party App Support | - | Yes |
| Call Features | - | Call Function, Caller ID, Call Reject |
| platform and storage features |
| Compatible Operating System | Android, iOS | iOS 10.0 and Above / Android 5.0 and Above |
| camera and display features |
| Display Resolution | 360x360 pixels | - |
| Display Size | 36mm | 44mm |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Compass | Yes | - |
| Calendar | Yes | - |
| Alarm Clock | Yes | Yes |
| Chronograph | Yes | - |
| Date & Time Display | Yes | - |
| Number of Buttons | 2 Pusher buttons | - |
| Other Fitness Features | Activity Tracker, Breathe, Voice Assistance, 123 Sports Mode Tracking, Calorie Tracker, Daily Workout Memory, Sedentary Reminder, Sleep Monitor | 7 Sports Modes |
| Other Watch Functions | Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, Calculator, Music Player, In-built games | Weather forecast, Stop watch, Call Function, Water reminder, Wrist sense |
| audio and video features |
| Speaker | Yes | In-built speaker |
| Microphone | Yes | Yes |
| Voice Control | Google Assistant, Siri | - |
| Other Multimedia Features | Music control | - |
| dimensions |
| Width | - | 36.3 |
| Height | - | 44.7 |
| Thickness | - | 11.5 |
| Weight (g) | - | 50.00 |