COLMI L28 Smart Watch (black silicone + black leather strap)

Design and display

The COLMI L28 smartwatch combines a compact design with a slim 7.9 mm profile. Its 48 × 41.5 mm black case is made of metal and ABS + PC plastic, and the package includes black silicone and leather straps. The 1.32-inch AMOLED touchscreen has a resolution of 466 × 466 pixels, 89° viewing angles on each side, and a curved, frameless glass design with full-fit OCA construction. Always-on Display lets you check the time without waking the screen. Choose from more than 100 watch faces or customize the display, including with the AI Watchface feature.

Health and wellness monitoring

The VC30F optical heart rate sensor supports continuous, 24-hour pulse monitoring and vibration alerts for detected abnormalities. The watch also measures blood oxygen (SpO₂), blood pressure, and stress, and provides sleep analysis covering REM, light, and deep sleep. Cycle-tracking features include menstrual-cycle, ovulation, and fertile-day tracking. Health measurements are intended for general wellness monitoring.

Activity tracking and sports modes

With more than 100 sports modes, the COLMI L28 tracks activities such as walking, running, cycling, jump rope, yoga, and golf. During workouts, it records duration, heart rate, and calories burned. The COLMI Fit app also tracks steps, distance, walking time, and activity data, with trends and records available for review.

Calls, notifications, and smart functions

Bluetooth calling is supported through the built-in microphone and speaker with HD Voice. Users can answer or reject calls, access contacts, and review call history. The watch syncs notifications from apps and messages, including WhatsApp, SMS, and Facebook. Other functions include an AI voice assistant with GPT features, weather, music controls, camera shutter, alarms, timer, stopwatch, world clock, calculator, find-phone function, flashlight, and SOS assistance. Bluetooth 5.2 BLE supports app functions, while Bluetooth 3.0 is used for voice calls; the range is up to 10 m.

Battery and durability

The 200 mAh lithium-polymer battery provides 5–7 days of operation with typical use and up to 15 days of standby time. Charging takes approximately 2 hours using the included 2-pin magnetic cable. The battery is rated for more than 300 charging cycles, and the watch uses a Seiko Y1 protection system. IP68 protection is specified for everyday contact with water and splashes.

Specifications

• Manufacturer: COLMI
• Model: L28
• Case dimensions: 48 × 41.5 × 7.9 mm
• Case color: Black
• Case material: Metal and ABS + PC plastic
• Straps: Leather and silicone
• Strap width: 18 mm
• Weight: 36 g with silicone strap; 77 g with metal strap; 32 g with leather strap
• Button: One rotary crown
• Battery type and capacity: Lithium polymer, 200 mAh
• Charging time: Approximately 2 hours
• Charging method: 2-pin magnetic cable
• Operating time: 5–7 days with typical use
• Standby time: 15 days
• Charging cycles: More than 300
• Protection system: Seiko Y1
• Display: 1.32-inch AMOLED touchscreen, 466 × 466 pixels
• Viewing angle: 89° on each side (89/89/89/89)
• Screen construction: Glass, full-fit OCA connection
• Bluetooth: BLE 5.2 for app functions and BT 3.0 for voice calls
• Bluetooth range: Up to 10 m
• App: COLMI Fit
• Compatible operating systems: Android 4.4 and later, iOS 8.0 and later, HarmonyOS
• Protection rating: IP68
• Bluetooth voice calls: Yes

Languages

Watch languages: English, Chinese, Japanese, Korean, German, French, Spanish, Arabic, Russian, Ukrainian, Italian, Portuguese, Dutch, Polish, Hungarian, Czech, Romanian, Indonesian, Thai, Turkish, Vietnamese, Greek, Malay, Bengali, and Kazakh.

App languages: English, Simplified Chinese, Japanese, Korean, German, French, Spanish, Arabic, Russian, Traditional Chinese, Ukrainian, Italian, Portuguese, Dutch, Polish, Swedish, Finnish, Danish, Norwegian, Hungarian, Czech, Bulgarian, Romanian, Slovak, Latvian, Indonesian, Thai, Turkish, Vietnamese, Hindi, Pashto, Lithuanian, Estonian, Slovenian, Croatian, and Greek.

Watch and app functions

Watch functions: Speaker, microphone, activity and exercise tracking, exercise log, sleep, heart rate, blood pressure, SpO₂, stress, cycle tracking, phone calls, messages, weather, AI voice, camera shutter, music player, timer, alarm, stopwatch, world clock, stock market, calculator, find phone, flashlight, Da GPT, AI watch face, settings, brightness, automatic sleep mode, watch faces, menu view, wrist raise, cover-to-sleep mode, vibration and ringtone, Do Not Disturb mode, sleep mode, low-power mode, phone and media sound controls, screen timer, time and language settings, night mode, restart, power off, reset, version information, app downloads, and certification information.

App functions: Steps, distance, calories, walking time, step records and comparisons, sleep monitoring and quality rating, seven-day sleep trends, heart rate and seven-day trends, blood pressure and trends, blood oxygen and SpO₂ trends, stress, period tracking (activate by setting the app profile to female), weight, intake reminders, outdoor running, walking and cycling, workout data, watch battery level, watch faces and store, AI watch face, Da GPT, notifications, find device, alarms, world clock, factory settings, snapshot, e-card, favorite contacts, time format, unit system, language, auto lock, quick view, phone music controls, Do Not Disturb settings, battery saver, weather settings, SOS emergency assistance, continuous heart rate monitoring, movement reminders, heart rate alerts, cycle and menstruation days, last menstrual period start date, cycle reminder mode and time, menstrual calendar and reminders, reset, update, goal setting, profile, and background-operation protection guide.

Sports modes

Walking, running, cycling, jump rope, badminton, basketball, soccer, climbing, tennis, rugby, golf, yoga, fitness, dance, baseball, elliptical training, stationary cycling, free training, rowing machine, sailing, water polo, other water sports, paddleboarding, water skiing, canoeing, rafting, rowing, motorboating, kitesurfing, rock climbing, skateboarding, rollerblading, parkour, quad biking, paragliding, triathlon, cross-country running, kabaddi, stepper, stair climbing, core training, stretching, Pilates, gymnastics, strength training, cross training, aerobics, physical training, wall ball, dumbbells, barbells, deadlifts, upper body, abs, functional training, burpees, back, lower body, abdominal muscles, HIIT, indoor walking, indoor running, weightlifting, square dancing, belly dancing, ballet, Zumba, Latin American dancing, street dancing, folk dancing, jazz dancing, boxing, wrestling, martial arts, tai chi, Muay Thai, judo, taekwondo, karate, kickboxing, fencing, kendo, volleyball, softball, hockey, table tennis, cricket, handball, squash, beach soccer, beach volleyball, sepak takraw, bowling, ice skating, curling, other winter sports, snowmobiling, ice hockey, bobsledding, sledding, skiing, archery, darts, tug-of-war, hula hooping, kite flying, horseback riding, Frisbee, fishing, equestrian sports, athletics, and car racing.

Included

• COLMI L28 smartwatch
• Magnetic charging cable
• Silicone and leather straps
• User manual