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| Brand & Model | COLMI i28 Ultra |
|---|---|
| Colors Available | Black, Silver |
| Screen Size | 1.43-inch AMOLED |
|---|---|
| Resolution | 466 × 466 Pixels |
| Touch Type | Full-Screen Touch |
| Always-On Display | Yes (AOD) |
| Chipset | JL7013A6S |
|---|---|
| RAM | Approx. 640 KB |
| Storage | Approx. 256 MB ROM |
| Heart-Rate Sensor | VC30F |
| Bluetooth | Bluetooth 5.3 |
|---|---|
| Companion App | COLMI Fit |
| Compatible OS | Android 4.4+ and iOS 8.0+ |
| Battery Capacity | Approx. 260mAh |
|---|---|
| Typical Usage Time | About 5–7 Days |
| Standby Time | Up to 30 Days |
| Charging Method | 2-Pin Magnetic Cable |
| Charging Time | Approx. 2 Hours |
| Heart Rate Monitoring | Yes |
|---|---|
| SpO₂ Monitoring | Yes (Blood Oxygen) |
| Sleep Monitoring | Yes |
| Female Cycle Tracking | Yes |
| Water Resistance | IP68 — Suitable for Splashes, Sweat, Rain & Everyday Water Resistance |
| Bluetooth Calling | Yes |
|---|---|
| Music Control | Yes |
| Camera Control | Yes |
| Voice Assistant | Supported |
| Notifications | Calls, Messages, Apps & Gesture Notifications |
| Additional Features | Weather, Alarm, Timer, Stopwatch, Find Phone, Multiple Watch Faces, Stock Trend & Muslim Prayer Reminders |
| Case / Body | Zinc Alloy + ABS + PC Build |
|---|---|
| Strap / Bands | Silicone Strap + Optional Magnetic Stainless/Bamboo Strap |
| Strap Width | Approx. 20 mm |
| Dimensions | Approx. 43.5 × 43.5 × 11 mm |
| Weight | Approx. 50–55g (Depending on Strap) |
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