Elegant COLMI C28 smartwatches combine an ultra-thin 7 mm body and low weight with a large 1.93" AMOLED HD display. They offer Bluetooth calling, a Da GPT AI assistant, more than 100 sports modes, health monitoring (heart rate, SpO2, stress, sleep), and up to 5–7 days of battery life on a single charge.
Large 1.93" AMOLED HD display
Enjoy vivid colors and sharp details thanks to the AMOLED panel with a resolution of 368 × 448 px. The large diagonal improves readability of notifications, metrics, and touch controls both indoors and outdoors.
Bluetooth calling directly from your wrist
Thanks to the built-in microphone and speaker, you can comfortably answer and make calls via Bluetooth 5.3. Ideal for work, a walk, or during training.
Ultra-thin and lightweight design for all-day comfort
The case is only 7 mm thick and weighs 39 g (according to the specification), designed for maximum comfort. The elegant metal body and leather strap highlight your style for any occasion.
COLMI C28 is a stylish smartwatch for everyday wear—at work, for sports, and for social events. The gold metal case combined with a white leather strap looks premium, while the 7 mm thickness makes the watch very comfortable even for all-day wear. Excellent readability is ensured by the 1.93" AMOLED display with a resolution of 368 × 448 px and a high screen-to-body ratio.
You will appreciate the practical features during the day and during workouts: you can make calls directly from your wrist (speaker and microphone), receive app notifications, and customize the watch face to match your style. For health and fitness, there is continuous heart-rate monitoring, SpO2, stress, AI sleep analysis, and more than 100 sports modes.
Main benefits:
- Da GPT AI assistant for quick answers and support throughout the day
- 1.93" AMOLED HD display – bright colors and excellent readability
- Bluetooth calls – calling without needing to take out your phone
- 4–7 days of battery life and magnetic charging (approx. 2–2.5 h)
- IP6X dust resistance and 1 ATM water resistance for everyday use
- Replaceable strap (20 mm width)
Package contents:
- Smartwatch
- Magnetic charging cable
- User manual
Specifications
- Manufacturer
- Colmi
- Model
- C28
- Color
- Gold + white strap
- Main chipset
- JL7074
- Flash memory
- RAM: 316K, ROM: 128M
- Heart-rate sensor
- VC30F
- Bluetooth version
- 5.3
- Bluetooth range
- Approx. 10 m
- Display
- AMOLED
- Display size
- 1.93 inches
- Resolution
- 368 x 448 px
- Viewing angle
- 89 / 89 / 89 / 89
- Touchscreen type
- Full-screen
- Display material
- Glass
- Display lamination
- Full lamination with OCA
- Battery type
- Lithium-polymer
- Battery capacity
- 230 mAh
- Protection chip
- Seiko Y1
- Charging method
- 2-pin magnetic cable
- Charging cycles
- More than 300
- Charging time
- Approx. 2–2.5 hours
- Operating time
- Approx. 4–7 days
- Standby time
- Approx. 20 days
- Speaker
- Yes
- Microphone
- Yes
- Case dimensions
- 46 x 40 x 7 mm
- Strap
- Leather
- 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 newer, iOS 9.0 and newer, Harmony OS
- App
- COLMI Fit
- Water resistance
- 1 ATM
- Dust protection
- IP6X
- 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, 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, stepper, 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 dances, street dance, folk dances, 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, petanque, badminton, 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, golf, equestrian sports, car racing, athletics, sailing, water polo, other water sports, paddleboarding, water skiing, kayaking, rafting, rowing, motorboats, fin swimming, diving, synchronized swimming, snorkeling, kitesurfing, open-water swimming
