The ultra-thin Colmi C28 smartwatch in an elegant silver color combines a 1.93" AMOLED HD display, Bluetooth calls, more than 100 sports modes, and advanced health monitoring (heart rate, SpO2, stress, and sleep). Thanks to its 230 mAh battery, it lasts approximately 4–7 days, while the Da GPT AI assistant provides quick answers right on your wrist.
Large 1.93" AMOLED display in a slim body
Enjoy a 1.93" AMOLED HD display with a resolution of 368 × 448 px for a sharp image and convenient control. The ultra-thin case, just 7 mm thick, fits comfortably on your wrist during work and sports.
Health functions and sleep tracking
The watch provides continuous monitoring of heart rate, SpO2, and stress levels. It also includes AI sleep analysis, including sleep stages and daytime naps, plus movement reminders for a more active day.
Bluetooth calls and smart notifications
Thanks to the built-in microphone and speaker, you can conveniently make Bluetooth calls directly from the watch. You will also have notifications from selected apps at hand, so important messages will not be missed even while you are on the move.
The Colmi C28 is a stylish and exceptionally comfortable smartwatch with a slim body, just 7 mm thick, and a low weight of 39 g. The large 1.93" AMOLED display with a resolution of 368 × 448 px offers vivid colors, fine details, and excellent readability during the day and in the evening.
A practical advantage is Bluetooth calling – thanks to the built-in microphone and speaker, you can make calls directly from the watch. The Da GPT AI assistant is also included for quick queries and everyday support without constantly reaching for your phone.
The watch supports a wide range of training and everyday health features:
- Heart-rate monitoring, SpO2 (blood oxygen saturation), stress, and sleep analysis (including naps)
- More than 100 sports modes and clear activity records
- App notifications and customizable watch faces, including your own photo
- 1 ATM water resistance and IP6X dust protection for everyday use
- 230 mAh battery with approximately 4–7 days of runtime and magnetic charging (approximately 2–2.5 hours)
Package contents: smartwatch, 2-pin magnetic charging cable, user manual.
Specifications
- Manufacturer
- Colmi
- Model
- C28
- Color
- Silver
- 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 diagonal
- 1.93 inches
- Resolution
- 368 x 448 px
- Viewing angle
- 89 / 89 / 89 / 89
- Touchscreen type
- Full-surface
- Display material
- Glass
- Display mounting
- Full mounting with OCA
- Battery type
- Lithium polymer
- Battery capacity
- 230 mAh
- Protection chip
- Seiko Y1
- Charging method
- 2-pin magnetic cable
- Number of charging 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 x 40 x 7 mm
- Strap
- Silicone
- Material
- Metal + iML
- Buttons
- 1 aluminum-alloy button
- 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
- Training modes
- Walking, running, cycling, jump rope, badminton, basketball, football, climbing, tennis, rugby, golf, yoga, exercise, dancing, baseball, elliptical trainer, stationary bike, custom exercise, rowing machine, outdoor running, walking, kabaddi, mountaineering, skateboarding, rollerblading, parkour, ATV, paragliding, triathlon, dumbbells, sit-ups, indoor walking, indoor running, stepper, stair walking, stepper, core training, flexibility, Pilates, gymnastics, stretching, strength, cross-training, aerobics, physical education, wall ball, dumbbell, deadlift, upper body, functional training, burpees, back, lower body, abdominal muscles, HIIT, weightlifting, square dancing, belly dancing, ballet, Zumba, Latin dancing, street dancing, folk dancing, jazz dancing, boxing, wrestling, martial arts, tai chi, Muay Thai, judo, taekwondo, karate, kickboxing, fencing, kendo, bowling, cricket, volleyball, softball, hockey, table tennis, handball, squash, billiards, badminton, beach football, beach volleyball, sepak takraw, skiing, skating, curling, other winter sports, snowmobiling, ice hockey, bobsledding, sledding, archery, darts, tug of war, hula hoop, kite flying, horseback riding, frisbee, golf, equestrian sports, car racing, athletics, yachting, water polo, other water sports, paddleboarding, water skiing, kayaking, rafting, rowing, motor boating, fin swimming, diving, synchronized swimming, snorkeling, kitesurfing, open-water swimming
Silver
Black
