| key specs |
| Strap Colour | Black, Blue, Green, Grey, Peach, Red, White | Black |
| Display Size | 45mm | 34mm |
| Strap Material | Silicone | - |
| Dial Shape | Square | Round |
| Ideal For | Unisex | Unisex |
| Compatible OS | - | Android, iOS |
| Display Type | - | AMOLED |
| general |
| Brand | Fire-Boltt | Fire-Boltt |
| Model | Call | Invincible |
| Release date | January 1, 1970 | October 1, 2021 |
| Dial Colour | Black | - |
| Dial Shape | Square | Round |
| Strap Colour | Black, Blue, Green, Grey, Peach, Red, White | Black |
| Strap Material | Silicone | - |
| Size | Regular | Regular |
| Touchscreen | Yes | Yes |
| Interchangeable Strap | Yes | - |
| Water Resistant | Yes | IP67 |
| Ideal For | Unisex | Unisex |
| Model Number | - | BSW020 |
| Model Name | - | Invincible |
| product details |
| Sensor | blood oxygen saturation (SpO2) sensor, heart rate monitor, sleep monitor, meditative breathing sensor, menstrual reminders, sedentary reminders, hydration reminders | Accelerometer Sensor, Barometer Sensor, Gyro Sensor, Light Sensor, Optical Heart Rate Sensor, SpO2 Sensor |
| Notification | Yes | Yes |
| Battery Life | 5 days | 7 days |
| Stand By Time | 30 days | 15 days |
| Rechargeable Battery | Yes | Yes |
| Compatible Device | - | Android, iPhone |
| Charge Time | - | 2 hours |
| Charger Type | - | Magnetic |
| connectivity features |
| Call Function | Yes | Yes |
| Bluetooth | Bluetooth | Bluetooth |
| Messaging Support | Yes | - |
| Email Support | Yes | - |
| Call Features | Yes | - |
| Bluetooth Version | - | 5.0 |
| platform and storage features |
| Processor Name | FB1 Nanochip | - |
| Compatible Operating System | - | Android, iOS |
| camera and display features |
| Display Size | 45mm | 34mm |
| Backlight Display | Yes | - |
| Other Camera Features | Camera Remote | - |
| Display Resolution | - | 454x454 |
| Display Type | - | AMOLED |
| Other Display Features | - | Always-On Display |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Chronograph | Yes | - |
| Date & Time Display | Yes | Yes |
| Language | English | English |
| Number of Buttons | 1 | - |
| Other Fitness Features | 7 sports modes | 100 sports modes |
| Other Watch Functions | 200+ watch faces | 8GB storage, 100 watch faces, calculator, TWS Connect, Quick Dial, flashlight |
| Calendar | - | Yes |
| audio and video features |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| Other Multimedia Features | - | music control, camera control |
| dimensions |
| Width | - | 45 |
| Height | - | 45 |
| Thickness | - | 11 |
| Weight (g) | - | 51.00 |