Is the Colmi i28 Ultra worth it?

At $36 it is a reasonable first smartwatch or gift. Expect basic fitness tracking, not accuracy on par with an Apple Watch or Garmin.

Yes, it is rated water resistant and listed for swimming. Avoid hot showers and salt water, which wear on budget seals.

How long does the battery last?

Up to 7 days with light use. With Bluetooth calls and the always-on display on, expect closer to 1 to 2 days.

Does it work with iPhone?

Yes, it pairs with both Android and iOS through the Colmi app. Some features, like replying to messages, are more limited on iOS.

The watch, a magnetic charging cable, and a quick-start guide. A spare strap is not included.

The lowest recent price was $36 on November 2, 2026, and it is $36 at smartizz.com as of November 6, 2026. It has sold for up to $47.99, so $36 is a good price.

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Tech · Bikeinn.com

A smartwatch that keeps up with your workouts

Name: Colmi i28 Ultra Smartwatch
Brand: Colmi
Price: 47.99 USD
Availability: InStock

Colmi i28 Ultra Smartwatch

The Colmi i28 Ultra Smartwatch is a feature-packed everyday wearable for fitness fans who like a big screen.

Deal score 6.9 · Great deal

$47.99$112.00 Bikeinn.com's regular price

You save $64.01 at Bikeinn.com

Checking it's still available…

Why it's a great deal

Bikeinn.com lists its regular price at $112.00: 57% off by its own figures
Rated 4.8 out of 5 by 879 buyers

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Every store we checked

smartizz.comNew
In stock
$36.00Observed at 2:38 AM
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Bikeinn.comNew
In stock
$47.99Observed at 3:03 PM
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eBayNew
In stockSold by jimsgarage
$56.00Observed at 3:03 PM
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eBayPre-owned
Availability unknownSold by aurellian22 (100% positive, 523 ratings)Ships from United Kingdom · duties may applyReturns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$33.38+ $13.77 shippingObserved at 3:03 PM
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Revel SmartNew
Availability unknown
$66.77Observed at 3:03 PM
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From Bikeinn.com

1.43-inch AMOLED full-screen touch display with 466x466 pixel resolution
Always-On Display (AOD) functionality
Bluetooth calling with built-in speaker and microphone
24/7 wrist heart rate monitoring and on-demand SpO2 blood oxygen measurement
Sleep quality analysis covering light, deep and REM stages
Over 100 professional sports and fitness tracking modes

Sizes: Long
Sizing: The page lists a single size option, Long; no fit guidance is given.
Guarantee: Official brand warranty.
Returns: Quick and easy 30-day return.
Shipping: Free shipping; no extra charges at delivery.

Specs

Tracking Type: Pedometer, Sleep Tracker, Calorie Counter
Water Resistant: Yes
For Swimming: Yes
Supported OS: Android, iOS
Color: Black, Silver, Gold, Golden
Size: Small, One Size
Connectivity: Bluetooth
Watch Style: Yes
Max Battery Life: Up to 7 days

About the Colmi i28 Ultra Smartwatch

The Colmi i28 Ultra is a budget smartwatch with a 1.85-inch display, Bluetooth calling, and a full set of fitness basics: pedometer, sleep tracking, calorie counting, and heart-rate monitoring. It is rated for swimming and works with both Android and iOS through the Colmi app. Battery life is rated up to 7 days, though heavy use of calls and the always-on display cuts that sharply. At $36 at smartizz.com as of November 6, 2026, it sits at the bottom of its recent range of $36 to $47.99.

Best forFirst-time smartwatch buyers on a tight budgetTeens and casual fitness trackersSwimmers who want a cheap watch for the poolA backup or travel watch

Pros

Very low price for the feature set
Bluetooth calling and notifications on the wrist
Rated water resistant for swimming
Up to 7 days of battery life on light use
Works with both Android and iOS

Cons

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