boAt Ultima Ember vs Xiaomi Watch S1 comparison
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| key specs |
| Dial Shape | Rectangle | Round |
| Display Type | AMOLED | AMOLED |
| Ideal For | Unisex | Unisex |
| Strap Colour | - | Black Viton, Brown Leather, Blue Leather |
| Display Size | - | 36mm |
| general |
| Brand | boAt | Xiaomi |
| Model | Ultima Ember | Watch S1 |
| Release date | February 22, 2025 | December 28, 2021 |
| Dial Shape | Rectangle | Round |
| Touchscreen | 1.96 | Yes |
| Water Resistant | IP68 | Yes |
| Usage | Regular | - |
| Ideal For | Unisex | Unisex |
| Model Number | - | M2108W1 |
| Dial Colour | - | Silver |
| Strap Colour | - | Black Viton, Brown Leather, Blue Leather |
| Size | - | Regular |
| Interchangeable Strap | - | Yes |
| Water Resistance Depth | - | 5ATM |
| Dial Material | - | Stainless steel |
| product details |
| Sensor | heart rate, SpO2, steps, sleep tracker | Heart rate sensor, SpO2 sensor, acceleration sensor, gyroscope, geomagnetic sensor, air pressure sensor, ambient light sensor |
| Battery Type | 300mAh | Li-ion polymer |
| Battery Life | 15 days | 12 days |
| Compatible Device | - | Android, iPhone |
| Notification | - | Yes |
| connectivity features |
| Call Function | Yes | Yes |
| Bluetooth | Yes | Bluetooth |
| Bluetooth Version | - | v5.2 |
| Wi-Fi | - | Yes |
| GPS | - | Yes |
| Messaging Support | - | Yes |
| Call Features | - | Yes |
| camera and display features |
| Display Resolution | 368 x 448 | 466x466 |
| Display Type | AMOLED | AMOLED |
| Other Display Features | Always-On Display | - |
| Display Size | - | 36mm |
| Backlight Display | - | Yes |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Calendar | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | Simplified Chinese |
| Calorie Count | - | Yes |
| Alarm Clock | - | Yes |
| Chronograph | - | Yes |
| Number of Buttons | - | 2 |
| Other Fitness Features | - | 117 sports modes |
| audio and video features |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| dimensions |
| Width | - | 46.5 |
| Height | - | 46.5 |
| Thickness | - | 11 |
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