| key specs |
| Display Size | 41mm | 48mm |
| Strap Material | Milanese | Silicone |
| Dial Shape | Round | Rectangle |
| Ideal For | Unisex | - |
| Strap Colour | - | Soft Black, Cream White, and Pastel Pink |
| Compatible OS | - | Android, iOS |
| Display Type | - | TFT LED |
| general |
| Brand | Xiaomi | Amazfit |
| Model | Watch S4 41mm | Bip 5 |
| Release date | September 24, 2025 | August 2, 2023 |
| Dial Shape | Round | Rectangle |
| Strap Material | Milanese | Silicone |
| Size | Regular | - |
| Touchscreen | 1.32 | Yes |
| Water Resistant | 5ATM | IP68 |
| Water Resistance Depth | 50 m | - |
| Usage | Regular | - |
| Dial Material | Stainless steel | - |
| Ideal For | Unisex | - |
| Model Name | - | Bip 5 |
| Dial Colour | - | Black |
| Strap Colour | - | Soft Black, Cream White, and Pastel Pink |
| dimensions |
| Width | 41.2 | 45.94 |
| Height | 41.2 | 38.09 |
| Diameter | 9.5 | - |
| Weight (g) | 32.00 | 26.00 |
| Thickness | - | 11.2 |
| product details |
| Sensor | Heart rate sensor (with blood oxygen sensor), Accelerometer, Gyroscope, Ambient light sensor, Electronic compass, Barometer sensor, Temperature sensor | SpO2 sensor, Heart Rate tracker, BioTracker PPG biometric sensor |
| Battery Type | 320mAh | - |
| Battery Life | 8 days | 10 days |
| Compatible Device | - | Android, iOS |
| Notification | - | Yes |
| Notification Type | - | Smart Notification |
| Charge Time | - | 2 hours |
| Charger Type | - | Magnetic Charger |
| Stand By Time | - | 26 days |
| Rechargeable Battery | - | Yes |
| connectivity features |
| Call Function | Yes | Yes |
| Bluetooth | Yes | Bluetooth |
| Bluetooth Version | 5.4 | Bluetooth 5.2 |
| GPS | Yes | Yes |
| platform and storage features |
| Operating System | Xiaomi HyperOS 3 | Zepp OS 2.0 |
| Compatible Operating System | - | Android, iOS |
| camera and display features |
| Display Resolution | 466 × 466 | 320x380 pixels |
| Display Size | 41mm | 48mm |
| Other Display Features | 1500nits, 60Hz refresh rate | 2.5D tempered glass, anti-fingerprint coating |
| Display Type | - | TFT LED |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Altimeter | Yes | - |
| Compass | Yes | Yes |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | - |
| Calorie Count | - | Yes |
| Number of Buttons | - | 1 |
| Other Fitness Features | - | Activity Tracker, Over 120 Sports Mode Tracking, Calorie Tracker, Sleep Monitor, Stress Monitor |
| Other Watch Functions | - | Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, Music Player, Notifications, Phone Call, Find My Phone, |
| audio and video features |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |