Ultra-thin Colmi C28 smartwatches combine an elegant design with practical everyday features: 1.93” AMOLED HD display, Bluetooth calling, Da GPT AI assistant, health monitoring, and more than 100 sports modes. Thanks to the 230 mAh battery, they last approximately 4–7 days on a single charge.
Da GPT AI assistant right in the watch
Get quick answers and practical help without taking out your phone. Da GPT (based on ChatGPT) expands what the watch can do and makes everyday situations easier at home, at work, and on the go.
Large 1.93” AMOLED HD display
Clear health and activity data on a 1.93” AMOLED display with a resolution of 368 × 448 px. Color tiles and a sharp image ensure easy navigation through menus and during workouts.
Health sensors and sports modes
The watch offers heart rate monitoring, SpO2 measurement, and stress tracking. On top of that, you get 100+ sports modes and helpful movement reminders for a more active day.
Colmi C28 are designed for comfort and performance – a case only 7 mm thick and weighing 39 g feels comfortable on the wrist all day. The large 1.93” AMOLED display with a 368 × 448 px resolution delivers a sharp image and excellent readability in different lighting conditions.
The watch supports Bluetooth calling thanks to a built-in microphone and speaker. For sports and a healthy lifestyle, you get continuous heart-rate measurement, SpO2, stress tracking, and AI sleep analysis including daytime naps. There are also app notifications and the option to customize the look with various watch faces.
Key benefits:
- Da GPT AI assistant for quick answers and support throughout the day
- Wrist calls via Bluetooth (microphone + speaker)
- 100+ sports modes and activity tracking
- 1 ATM water resistance and IP6X dust protection
- 4–7 days battery life, magnetic charging in approx. 2–2.5 hours
In the box: smartwatch, magnetic charging cable, user manual.
Specifications
- Manufacturer
- Colmi
- Model
- C28
- Color
- Black
- Main chipset
- JL7074
- Flash memory
- RAM: 316K, ROM: 128M
- Heart rate sensor
- VC30F
- Bluetooth version
- 5.3
- Bluetooth range
- Approximately 10 m
- Display
- AMOLED
- Display size
- 1.93 inches
- Resolution
- 368 × 448 px
- Viewing angle
- 89 / 89 / 89 / 89
- Touchscreen type
- Full-screen
- Display material
- Glass
- Display bonding
- Full bonding with OCA
- Battery type
- Lithium polymer
- Battery capacity
- 230 mAh
- Protection chip
- Seiko Y1
- Charging method
- 2-pin magnetic cable
- Number of charge cycles
- More than 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
- Silicone
- Material
- Metal + iML
- Buttons
- 1 button made of aluminum alloy
- Watch weight
- 39 g (with silicone strap)
- Strap width
- 20 mm
- Replaceable strap
- Yes
- Compatible systems
- Android 5.0 and later, iOS 9.0 and later, Harmony OS
- App
- COLMI Fit
- Water resistance
- 1 ATM
- Updates
- OTA
- Watch languages
- English, Simplified Chinese, Korean, German, French, Spanish, Arabic, Russian, Ukrainian, Italian, Portuguese, Polish, Bengali
- App languages
- English, Simplified Chinese, Traditional Chinese, German, French, Arabic, Czech, Greek, Spanish, Japanese, Persian, Italian, Korean, Polish, Portuguese, Russian, Finnish, Swedish, Thai, Hungarian, Slovak, Croatian, Albanian, Turkish, Ukrainian
- Workout modes
- Walking, running, cycling, jump rope, badminton, basketball, soccer, climbing, tennis, rugby, golf, yoga, workout, dance, baseball, elliptical trainer, stationary bike, custom workout, rowing machine, outdoor running, walking, kabaddi, mountaineering, skateboarding, roller skating, parkour, ATV, paragliding, triathlon, dumbbells, sit-ups, indoor walking, indoor running, stepper, stair walking, core training, flexibility, pilates, gymnastics, stretching, strength, cross-training, aerobics, physical training, wall ball, barbell, deadlift, upper body, functional training, burpees, back, lower body, abs, HIIT, weightlifting, square dance, belly dance, ballet, Zumba, Latin dance, street dance, folk dance, jazz dance, boxing, wrestling, martial arts, tai chi, muay thai, judo, taekwondo, karate, kickboxing, fencing, kendo, bowling, cricket, volleyball, softball, hockey, table tennis, handball, squash, billiards, beach soccer, beach volleyball, sepak takraw, skiing, skating, curling, other winter sports, snowmobile, ice hockey, bobsleigh, sledding, archery, darts, tug of war, hula hoop, kite flying, horseback riding, frisbee, car racing, athletics, yachting, water polo, other water sports, paddleboarding, water skiing, kayaking, rafting, rowing, motorboats, fin swimming, diving, synchronized swimming, snorkeling, kitesurfing, open-water swimming
