| key specs |
| Display Size | 36mm | 48mm |
| Compatible OS | Android 8.0 or above, iOS 12.0 or above | - |
| Dial Shape | Round | Square |
| Display Type | AMOLED | - |
| Ideal For | Unisex | - |
| Strap Colour | - | Blue, Black, Grey, Maroon |
| general |
| Brand | Xiaomi | boAt |
| Model | Watch S4 15th Anniversary Edition | Storm Connect Plus |
| Release date | May 23, 2025 | May 16, 2023 |
| Model Name | Xiaomi Watch S4 15th Anniversary Edition | Storm Connect Plus |
| Dial Colour | Black | Black |
| Dial Shape | Round | Square |
| Size | Regular | - |
| Touchscreen | 1.43 | - |
| Interchangeable Strap | Yes | - |
| Water Resistant | 5 ATM | IP68 |
| Usage | Regular | - |
| Ideal For | Unisex | - |
| Strap Colour | - | Blue, Black, Grey, Maroon |
| dimensions |
| Width | 47.3 | - |
| Height | 47.3 | - |
| Thickness | 12 | - |
| Weight (g) | 44.50 | - |
| product details |
| Sensor | Heart Rate Monitor, Stress, Sleep | SpO2 sensor, Heart Rate tracker |
| Compatible Device | Android and iOS | - |
| Battery Type | 486mAh | - |
| Notification | - | Yes |
| Notification Type | - | Push Notification |
| Battery Life | - | 7 days |
| Charge Time | - | 2 hours |
| Rechargeable Battery | - | Yes |
| Other Features | - | Activity Tracker, Alarm Clock, Bluetooth Calling , 100 Sports Mode Tracking, In Built Mic & Speaker, Music Control, Notifications, Camera Control, Sedentary Reminder |
| connectivity features |
| Bluetooth | Yes | Bluetooth |
| Bluetooth Version | 5.3 | Bluetooth 5.3 |
| Wi-Fi | Yes | - |
| GPS | Yes | - |
| Other Connectivity Features | NFC, Galileo, Glonass, Beidou, QZSS | - |
| Call Function | - | Yes |
| Call Features | - | Noise cancellation |
| platform and storage features |
| Operating System | HyperOS 2 | - |
| Compatible Operating System | Android 8.0 or above, iOS 12.0 or above | - |
| camera and display features |
| Display Resolution | 466 x 466 | - |
| Display Size | 36mm | 48mm |
| Display Type | AMOLED | - |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | - |
| Other Fitness Features | - | Activity Tracker, Sedentary Reminder, Sleep Monitor, Menstrual cycle tracker |
| Other Watch Functions | - | 100+ watch faces, 100+ sports modes, Bilingual |