| key specs |
| Strap Colour | Black | - |
| Display Size | 34mm | - |
| Compatible OS | Android, iOS | - |
| Dial Shape | Round | Round |
| Display Type | AMOLED | - |
| Ideal For | Unisex | - |
| Strap Material | - | Silicone |
| general |
| Brand | Fire-Boltt | Huami |
| Model | Invincible | Amazfit Stratos 3 |
| Release date | October 1, 2021 | August 27, 2019 |
| Model Number | BSW020 | - |
| Model Name | Invincible | Stratos 3 |
| Dial Shape | Round | Round |
| Size | Regular | - |
| Touchscreen | Yes | Yes |
| Water Resistant | IP67 | 5ATM |
| Ideal For | Unisex | - |
| Strap Colour | Black | - |
| Strap Material | - | Silicone |
| Water Resistance Depth | - | 50 Meters |
| Usage | - | For Sports |
| Dial Material | - | Stainless Steel |
| dimensions |
| Width | 45 | - |
| Height | 45 | - |
| Thickness | 11 | 13.4 mm |
| Weight (g) | 51.00 | 40.40 |
| Diameter | - | 48.6mm |
| product details |
| Sensor | Accelerometer Sensor, Barometer Sensor, Gyro Sensor, Light Sensor, Optical Heart Rate Sensor, SpO2 Sensor | BioTracker PPG Bio-Tracking optical sensor, 6-axis acceleration sensor, 3-axis geomagnetic sensor, Air pressure sensor |
| Compatible Device | Android, iPhone | Android 5.0 or iOS 10.0 and above |
| Notification | Yes | Yes |
| Battery Life | 7 days | 7 days in smart mode |
| Charge Time | 2 hours | 2.5 hours |
| Charger Type | Magnetic | - |
| Stand By Time | 15 days | - |
| Rechargeable Battery | Yes | - |
| Notification Type | - | Calls, Messages, App Alerts |
| Battery Type | - | Lithium-ion polymer battery |
| connectivity features |
| Call Function | Yes | - |
| Bluetooth | Bluetooth | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Wi-Fi | - | Yes |
| GPS | - | Yes |
| platform and storage features |
| Compatible Operating System | Android, iOS | - |
| Operating System | - | Amazfit OS |
| Number of Cores | - | dual-core |
| RAM | - | 512MB |
| Processor Speed | - | 1200 |
| Internal Memory | - | 2GB |
| camera and display features |
| Display Resolution | 454x454 | 320x320 |
| Display Size | 34mm | - |
| 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 |
| Calendar | Yes | - |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | - |
| Language | English | - |
| Other Fitness Features | 100 sports modes | 80 Sports Modes |
| Other Watch Functions | 8GB storage, 100 watch faces, calculator, TWS Connect, Quick Dial, flashlight | - |
| Number of Buttons | - | 4 |
| audio and video features |
| Speaker | Yes | - |
| Microphone | Yes | - |
| Other Multimedia Features | music control, camera control | - |
| Audio Features | - | Standalone Music Playback |