Xiaomi Smart Band 9 Pro vs Xiaomi Watch S4 comparison
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| key specs |
| Dial Shape | Rectangle | Round |
| Display Type | AMOLED | AMOLED |
| Ideal For | Unisex | Unisex |
| general |
| Brand | Xiaomi | Xiaomi |
| Model | Smart Band 9 Pro | Watch S4 |
| Release date | October 29, 2024 | October 29, 2024 |
| Dial Shape | Rectangle | Round |
| Size | Regular | Regular |
| Touchscreen | 1.74 | 1.43 |
| Water Resistant | 5 ATM | 5 ATM |
| Usage | Regular | Regular |
| Ideal For | Unisex | Unisex |
| Interchangeable Strap | - | Yes |
| dimensions |
| Width | 43.27 | 47.3 |
| Height | 32.49 | 47.3 |
| Thickness | 10.2 | 12 |
| Weight (g) | 24.50 | 44.50 |
| product details |
| Sensor | heart rate, SpO2, steps | heart rate, SpO2, steps, sleep tracker |
| Battery Type | 350 | 486mAh |
| Battery Life | 21 days | 15 |
| connectivity features |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | 5.2 |
| Other Connectivity Features | GNSS, NFC | NFC, Galileo, Glonass, Beidou, QZSS |
| Wi-Fi | - | Yes |
| GPS | - | Yes |
| platform and storage features |
| Operating System | HyperOS 2 | HyperOS 2 |
| camera and display features |
| Display Resolution | 336 x 480 | 466 x 466 |
| Display Type | AMOLED | AMOLED |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Calendar | Yes | - |
| Alarm Clock | Yes | - |
| Date & Time Display | Yes | Yes |
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