| key specs |
| Strap Colour | Black, Green, Pink | - |
| Compatible OS | Android, iOS | - |
| Strap Material | Silicone | Silicone |
| Dial Shape | Rectangle | Round |
| general |
| Brand | Amazfit | Huami |
| Model | Bip U | Amazfit Stratos 3 |
| Release date | October 15, 2020 | August 27, 2019 |
| Model Name | Bip U | Stratos 3 |
| Dial Shape | Rectangle | Round |
| Strap Material | Silicone | Silicone |
| Size | Regular | - |
| Touchscreen | Yes | Yes |
| Interchangeable Strap | Yes | - |
| Water Resistant | 5 ATM | 5ATM |
| Water Resistance Depth | 50 metres | 50 Meters |
| Dial Material | Polycarbonate | Stainless Steel |
| Strap Colour | Black, Green, Pink | - |
| Dial Colour | Black, Green, Pink | - |
| Usage | - | For Sports |
| dimensions |
| Width | 35.5 | - |
| Height | 40.9 | - |
| Thickness | 11.4 | 13.4 mm |
| Weight (g) | 31.00 | 40.40 |
| Diameter | - | 48.6mm |
| product details |
| Sensor | BioTracker 2 PPG Biological optical sensor, 6-axis acceleration sensor | BioTracker PPG Bio-Tracking optical sensor, 6-axis acceleration sensor, 3-axis geomagnetic sensor, Air pressure sensor |
| Compatible Device | Android, iOS | Android 5.0 or iOS 10.0 and above |
| Notification | Yes | Yes |
| Battery Life | 9 days | 7 days in smart mode |
| Charge Time | 2 hours | 2.5 hours |
| Charger Type | 2 Pogo Pin Charger | - |
| Notification Type | - | Calls, Messages, App Alerts |
| Battery Type | - | Lithium-ion polymer battery |
| connectivity features |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Wi-Fi | Yes | Yes |
| GPS | - | Yes |
| platform and storage features |
| Operating System | RTOS | Amazfit OS |
| Compatible Operating System | Android, iOS | - |
| Number of Cores | - | dual-core |
| RAM | - | 512MB |
| Processor Speed | - | 1200 |
| Internal Memory | - | 2GB |
| camera and display features |
| Display Resolution | 320x302 | 320x320 |
| Other Display Features | Anti-Fingerprint Coating, 2.5D Corning Gorilla Glass 3 | - |
| 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 |
| Date & Time Display | Yes | - |
| Language | English | - |
| Number of Buttons | 1 | 4 |
| Other Fitness Features | 60 sports modes | 80 Sports Modes |
| Other Watch Functions | 24 hour heart rate monitoring, sleep quality monitoring, blood oxygen level sensor, menstrual cycle tracker | - |
| audio and video features |
| Speaker | Yes | - |
| Microphone | Yes | - |
| Other Multimedia Features | show notifications, control music, set alarms, remote control the phone’s camera | - |
| Audio Features | - | Standalone Music Playback |