COLMI i28 Ultra Smartwatch
COLMI i28 Ultra Smartwatch combines a sharp AMOLED display with Bluetooth calling, smart daily tools, activity records, sleep trends, and COLMI Fit app-connected wellness data.
- 1.43 inch AMOLED display with 466*466 resolution
- Bluetooth 5.3 calling and smart notifications
- App-connected activity, sleep, heart rate, and SpO2 records
- IP68 daily water resistance
- 5-7 day typical use with 2pin magnetic charging
COLMI smartwatches are designed for general wellness and lifestyle records. They are not medical devices and are not intended to diagnose, treat, cure, or prevent any disease.
Explore all COLMI smart watches or contact COLMI for product questions.
1.43 inch AMOLED display with 466 x 466 resolution
Bluetooth 5.3 calling, notifications, and smart tools
Available colors: Black, Gold, and Silver
COLMI Fit records activity, sleep, heart rate, and SpO2 trends
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Design details from the original product story
Refresh product visuals migrated into Concept native cards for a maintainable product page.
HD AMOLED screen
The 1.43 inch AMOLED screen and 466 x 466 resolution give i28 Ultra a sharper visual experience.
Zinc alloy shell
A refined case finish supports everyday wear and a more polished smartwatch look.
Comfortable strap setup
The strap design is made for daily comfort and easy wear.
Special tools, presented with safer copy
Reminder tools
Use supported reminder and timing tools as part of your daily routine.
Market trend widget
Review supported trend widgets as quick reference information when connected.
AI assistant access
Use assistant access for supported phone-connected tasks when available in your setup.
Tools for daily use
Games
Lightweight games and casual tools add small moments of convenience during the day.
IP68 daily water resistance
Built for common daily water exposure. Avoid diving, sauna, hot water, and high-pressure water use.
COLMI Fit connection
Pair with COLMI Fit to sync records, change settings, and review watch data.
Sleep trends
Wear i28 Ultra overnight to record sleep timing and sleep-stage trends for personal reference.
SpO2 records
Review blood oxygen records as a consumer wellness reference, not as medical data.
Cycle reminders
Set cycle-related reminders in the connected app when supported by your setup.
More watch functions
Voice switching watch face
Use supported voice and watch-face controls to adjust the watch experience more quickly.
Super multifunctional
Access practical tools such as weather, alarms, timer, camera remote, and more.
Listen to music
Control music from your wrist while your phone stays nearby.
Details before you buy
Parameter chart
Use the visual chart as a quick parameter reference.
Package reference
Package contents may vary by market and final fulfillment setup.
i28 Ultra specifications
Core specifications rewritten for a clean product page and safer wellness positioning.
Base parameters
Brand: COLMI
Product name: i28 Ultra Smartwatch
Colors: Black, Gold, Silver
Connectivity: Bluetooth 5.3
Display and design
Screen size: 1.43 inch
Screen type: AMOLED
Resolution: 466 x 466 pixels
Touch type: Full-screen touch
Battery and charging
Charging method: 2-pin magnetic charging
Typical use time: About 5-7 days, depending on setup, operation, and environment.
App and compatibility
App: COLMI Fit
Watch features: Bluetooth calls, smart notifications, sports records, sleep trends, heart rate records, SpO2 reference, activity records, music control, camera remote, reminders, and watch face switching.
App download
Download COLMI Fit from Google Play or the App Store.
Wellness data notice
This product is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease. Health and wellness data is for personal reference only. Battery life and feature availability may vary by setup, operation, app version, and environment.
Questions before you order
Quick answers about color variants, app compatibility, battery life, water resistance, and wellness records.
Which colors are available?
The current sales variants are Black, Gold, and Silver. Silver is the confirmed variant name for the light color option.
Which app does i28 Ultra use?
i28 Ultra works with the COLMI Fit app for watch connection, records, watch faces, and daily settings.
How long does the battery last?
The listed typical use time is about 5-7 days. Actual battery life depends on settings, screen brightness, notifications, call use, and environment.
Is i28 Ultra water resistant?
i28 Ultra is listed as IP68 water resistant for common daily water exposure. Do not use it for diving, sauna, hot water, or high-pressure water sports.
Are the wellness records medical data?
No. i28 Ultra is a consumer smartwatch. Wellness records are for personal reference only and are not intended for diagnosis, treatment, cure, or disease prevention.