COLMI C28 smartwatch, black with brown leather strap
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Choose countryThe COLMI C28 is a smartwatch with a black, 7 mm slim case and a brown leather strap. Its 1.93″ AMOLED touchscreen displays notifications, activity data and your chosen watch face.
Calls and everyday tools
A built-in microphone and speaker let you make and answer Bluetooth calls. The ChatGPT-based Da GPT assistant supports questions, information searches and content generation. The watch displays notifications from WhatsApp, Facebook and TikTok, while watch face customisation offers preset designs or your own photo.
Activity and wellbeing tracking
- Sports: over 100 modes, including walking, running, cycling and badminton.
- Monitoring: round-the-clock heart rate tracking, blood oxygen saturation and stress measurements.
- Sleep: AI-powered analysis covering sleep stages and daytime naps.
- Reminders: movement reminders throughout the day.
Battery and compatibility
The 230 mAh battery provides approximately 4–7 days of operation, with magnetic charging taking approximately 2–2.5 hours. The watch uses the COLMI Fit app and supports Android 5.0 or later, iOS 9.0 or later and Harmony OS. It has a 1ATM water-resistance rating and IP6X dust protection.
The package contains the smartwatch, a magnetic charging cable and a user manual.
| Manufacturer | COLMI |
|---|---|
| Model | C28 |
| Colour | Black with brown strap |
| Main chipset | JL7074 |
| Memory | RAM: 316K, ROM: 128M |
| Heart rate sensor | VC30F |
| Bluetooth version | 5.3 |
| Bluetooth range | Approximately 10 m |
| Display | AMOLED |
| Display diagonal | 1.93 inches |
| Resolution | 368 × 448 px |
| Viewing angle | 89 / 89 / 89 / 89 |
| Touch control | Full-screen |
| Screen material | Glass |
| Screen bonding | Full bonding with OCA |
| Battery type | Lithium-polymer |
| Battery capacity | 230 mAh |
| Protection chip | Seiko Y1 |
| Charging method | 2-pin magnetic cable |
| Charging cycles | Over 300 |
| Charging time | Approximately 2–2.5 hours |
| Operating time | Approximately 4–7 days |
| Standby time | Approximately 20 days |
| Speaker | Yes |
| Microphone | Yes |
| Case dimensions | 46 × 40 × 7 mm |
| Strap material | Leather |
| Material | Metal + iML |
| Buttons | 1 aluminium alloy button |
| Strap width | 20 mm |
| Interchangeable strap | Yes |
| Compatible systems | Android 5.0 and later, iOS 9.0 and later, Harmony OS |
| App | COLMI Fit |
| Water resistance | 1ATM |
| Updates | OTA |
| Watch languages | English, Simplified Chinese, Korean, German, French, Spanish, Arabic, Russian, Ukrainian, Italian, Portuguese, Polish, Bengali |
| App languages | English, Simplified and Traditional Chinese, German, French, Arabic, Czech, Greek, Spanish, Japanese, Persian, Italian, Korean, Polish, Portuguese, Russian, Finnish, Swedish, Thai, Hungarian, Slovak, Croatian, Albanian, Turkish, Ukrainian |
| Training modes | Over 100, including walking, running, cycling, skipping, badminton, basketball, football, yoga, Pilates, strength training and dancing |
| Case alloy | Zinc alloy |
| Screen-to-body ratio | 90% |
| Dust protection | IP6X |
| Calls | Incoming and outgoing Bluetooth calls |
| AI assistant | Da GPT, based on ChatGPT |
| Health tracking features | 24/7 heart rate monitoring, blood oxygen saturation, stress level, AI sleep analysis including sleep stages and daytime naps |
| Additional features | Movement reminders, app notifications, customisable watch faces and personal photo |
| EAN | 6972436987009 |
|---|
Is a charging cable included?
Yes. The package includes a magnetic charging cable, the smartwatch and a user manual.
Can the strap be replaced?
Yes. The brown leather strap is interchangeable and has a width of 20 mm.
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