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Colmi L28 Air Stainless Steel Smartwatch with Heart Rate Monitor (Purple)
Smartwatches

Colmi L28 Air Stainless Steel Smartwatch with Heart Rate Monitor (Purple)

The COLMI L28 Air Dual Strap is a smartwatch that combines refined design with top performance. Ideal for women who want a versatile, stylish, and functional accessory, this model features two...

The COLMI L28 Air Dual Strap is a smartwatch that combines refined design with top performance. Ideal for women who want a versatile, stylish, and functional accessory, this model features two interchangeable straps – one made of soft silicone for everyday comfort and one of premium stainless steel for a touch of luxury.

  • Excellent design with dual style:...
See full description See full description

  • Battery Life

    Battery life shows how many days the smartwatch can operate without charging.


    It depends on the battery capacity, but also on how much you use it (e.g. active display, GPS, notifications, etc.).


    For example, a smartwatch with 2-3 days of battery life is ideal for daily use with all features enabled.


    Models with 5–10 days or more are suitable for those who do not want to charge often or use it more "lightly".


    The value is especially meaningful when comparing products from the same manufacturer.

  • Display Type

    AMOLED

    Advanced OLED screen type with better visual experience, almost perfect black performance, thin and light but with higher energy consumption than Super AMOLED.

  • Waterproof

    Hand Washing

    You don't need to remove your watch every time you wash your hands. The smartwatch is water-resistant, fully covering frequent washing, making it practical for every moment of the day.
  • See all
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Product report

Description

Description

The COLMI L28 Air Dual Strap is a smartwatch that combines refined design with top performance. Ideal for women who want a versatile, stylish, and functional accessory, this model features two interchangeable straps – one made of soft silicone for everyday comfort and one of premium stainless steel for a touch of luxury.

  • Excellent design with dual style: Perfectly adapts for both sporty or refined looks.
  • Ultra-thin metal case with flawless finish.
  • 1.32” HD AMOLED display (466×466 px) – vivid colors and outstanding contrast.
  • Lightweight (36g) and comfortable for daily use.
  • Silicone strap + stainless steel strap included in the package.

Bluetooth 5.2 connectivity: Control everything directly from your wrist.

  • Answer or make calls without taking out your phone.
  • Receive notifications for calls, messages, and social apps.
  • Built-in microphone and speaker.
  • Compatible with Android and iOS phones.

Comprehensive health monitoring: Stay connected with your wellbeing anytime.

  • 24/7 heart rate monitoring.
  • Blood oxygen level (SpO₂).
  • Sleep, stress, and daily activity analysis.
  • Female health function – menstrual cycle tracking.
  • Breathing and relaxation exercises.

Data is stored in the COLMI Fit app, which provides clear analysis and progress history.

  • Daily movement and motivation: Counts steps, distance, and calories.
  • Includes preset sports modes.
  • Stopwatch, timer, and movement reminders.

Reliable performance and battery life:

  • Jieli JL7013 processor for stable performance.
  • 180–220mAh battery with up to 5 days of autonomy.
  • Fast magnetic charging (≈ 2 hours).

Water resistance and superior durability:

  • Professional waterproof certification – protection against rain, sweat, and splashes.
  • Ideal for everyday use and outdoor activities.

Smart and useful features:

  • Bluetooth calls and notifications.
  • Music and camera control.
  • Alarm, calendar, stopwatch.
  • Weather display and multiple watch faces.
  • OTA (Over-The-Air) updates.
  • Customizable vibration.

Technical specifications:

  • Model: COLMI L28 Air Dual Strap.
  • Display: 1.32” AMOLED, 466×466 px.
  • Bluetooth: 5.2.
  • Processor: Jieli JL7013.
  • Battery: 180–220mAh (up to 5 days autonomy).
  • Case material: Metal alloy.
  • Straps: 2x – Silicone + Stainless steel.

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Technical Specifications

Colour
Purple
Release Date
-
Screen Size
1.32 "

Screen Size

"The design and size of the casing affect how each screen size appears on the wrist. Most smartwatches have screens of 1.4-1.5 inches."
Screen Resolution
-
Screen Type
AMOLED

Screen Type

AMOLED

Advanced OLED screen type with better visual experience, almost perfect black performance, thin and light but with higher energy consumption than Super AMOLED.
Compatible Operating System
Android, iOS

Compatible Operating System

The smartphone must be compatible with the watch. Apple Watches only connect with iPhones, while some others can connect with both Android and iPhones, but some functions may not be fully supported.
Touch Screen
Yes
Connection
Bluetooth

Connection

Bluetooth
The basic way to connect your smartwatch to your mobile phone and other supported devices, such as wireless headphones.
Strap
Silicone
Case material
Stainless Steel

Case material

Stainless Steel
"The most popular material for constructing a case is more resistant to rust, impacts, and scratches compared to others, but with greater weight."

Features & Functions

Features
Speaker, Microphone

Features

Speaker

Playback of multimedia, notification sounds, or voice.

Microphone
For voice commands or speech.
Features & Functions
SMS, Caller ID, Application / Calls Notification

Features & Functions

SMS
The smartwatch can display SMS messages.
Caller ID

The smartwatch can display the name of the contact who is calling.

Application / Calls Notification

The smartwatch has the ability to transfer notifications from our mobile phone applications such as receiving SMS, Email or a notification from a social media application. Depending on the smartwatch, we may also be able to read it directly from it.
Use
Misc Sports / Gym

Use

The smartwatch has the ability to record the corresponding activity and produce relevant statistics.

Additional Specifications

Sensors
Pedometer, Accelerometer, Heart Rate, Sleep Monitoring

Sensors

Pedometer

Recording steps and distance.

Accelerometer
This sensor allows the device to perceive changes in acceleration. For example, with this sensor, it can count the steps we take when wearing it.
Heart Rate

Embedded heart rate monitor.

Sleep Monitoring

Recording of heart rate and breathing during sleep and diagnosis of problems according to the product. (e.g. restless sleep, lack of deep sleep, etc.)
Protection
-
ATM Rating
-

ATM Rating

The ATM rating on smartwatches indicates their level of water resistance, which tells how well the watch can withstand exposure to water and various pressure levels.

3 ATM (30 meters): Suitable for everyday splashes, rain, and hand washing.

5 ATM (50 meters): Light swimming, showering.

10 ATM (100 meters): Swimming, snorkeling, water sports.

15 ATM (150 meters): Advanced swimming, water sports.

20 ATM (200 meters): Diving, deep water activities.

50 ATM (500 meters): Professional diving, excellent water resistance.
Waterproof
Hand Washing

Waterproof

Hand Washing

You don't need to remove your watch every time you wash your hands. The smartwatch is water-resistant, fully covering frequent washing, making it practical for every moment of the day.
MIL-STD-810
No

Battery

Battery Capacity
-

Battery Capacity

Most smartwatches have a battery capacity of around 200mAh. 2. The size of the battery is not always indicative of the autonomy, as this largely depends on the features of the smartwatch and the functions we have active. 3. For example, a smartwatch with a large color touch screen and 24-hour heart rate monitoring will often require charging even if it has a larger battery than a simpler smartwatch.
Battery Life
5 days

Battery Life

Battery life shows how many days the smartwatch can operate without charging.


It depends on the battery capacity, but also on how much you use it (e.g. active display, GPS, notifications, etc.).


For example, a smartwatch with 2-3 days of battery life is ideal for daily use with all features enabled.


Models with 5–10 days or more are suitable for those who do not want to charge often or use it more "lightly".


The value is especially meaningful when comparing products from the same manufacturer.
Standby Time
-

Standby Time

The amount of time a smartwatch can operate in standby mode, simply connected to a mobile phone with one charge. A typical average is 12 days, but it depends on what each manufacturer defines as standby mode. Size makes sense mainly in comparing products from the same manufacturer.

Dimensions

Case Size
-
Weight
-

AI Features

AI Voice Assistant
No
AI Training Coach
-
AI Health Insights
-

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications
Questions

Questions

Do you have a question about the product?

Those users who have this product can help you

Ask for the product

Description & Specifications

The COLMI L28 Air Dual Strap is a smartwatch that combines refined design with top performance. Ideal for women who want a versatile, stylish, and functional accessory, this model features two interchangeable straps – one made of soft silicone for everyday comfort and one of premium stainless steel for a touch of luxury.

  • Excellent design with dual style: Perfectly adapts for both sporty or refined looks.
  • Ultra-thin metal case with flawless finish.
  • 1.32” HD AMOLED display (466×466 px) – vivid colors and outstanding contrast.
  • Lightweight (36g) and comfortable for daily use.
  • Silicone strap + stainless steel strap included in the package.

Bluetooth 5.2 connectivity: Control everything directly from your wrist.

  • Answer or make calls without taking out your phone.
  • Receive notifications for calls, messages, and social apps.
  • Built-in microphone and speaker.
  • Compatible with Android and iOS phones.

Comprehensive health monitoring: Stay connected with your wellbeing anytime.

  • 24/7 heart rate monitoring.
  • Blood oxygen level (SpO₂).
  • Sleep, stress, and daily activity analysis.
  • Female health function – menstrual cycle tracking.
  • Breathing and relaxation exercises.

Data is stored in the COLMI Fit app, which provides clear analysis and progress history.

  • Daily movement and motivation: Counts steps, distance, and calories.
  • Includes preset sports modes.
  • Stopwatch, timer, and movement reminders.

Reliable performance and battery life:

  • Jieli JL7013 processor for stable performance.
  • 180–220mAh battery with up to 5 days of autonomy.
  • Fast magnetic charging (≈ 2 hours).

Water resistance and superior durability:

  • Professional waterproof certification – protection against rain, sweat, and splashes.
  • Ideal for everyday use and outdoor activities.

Smart and useful features:

  • Bluetooth calls and notifications.
  • Music and camera control.
  • Alarm, calendar, stopwatch.
  • Weather display and multiple watch faces.
  • OTA (Over-The-Air) updates.
  • Customizable vibration.

Technical specifications:

  • Model: COLMI L28 Air Dual Strap.
  • Display: 1.32” AMOLED, 466×466 px.
  • Bluetooth: 5.2.
  • Processor: Jieli JL7013.
  • Battery: 180–220mAh (up to 5 days autonomy).
  • Case material: Metal alloy.
  • Straps: 2x – Silicone + Stainless steel.

Manufacturer

Manufacturer Details

Warnings & Safety Information

Technical Specifications

Colour
Purple
Release Date
-
Screen Size
1.32 "

Screen Size

"The design and size of the casing affect how each screen size appears on the wrist. Most smartwatches have screens of 1.4-1.5 inches."
Screen Resolution
-
Screen Type
AMOLED

Screen Type

AMOLED

Advanced OLED screen type with better visual experience, almost perfect black performance, thin and light but with higher energy consumption than Super AMOLED.
Compatible Operating System
Android, iOS

Compatible Operating System

The smartphone must be compatible with the watch. Apple Watches only connect with iPhones, while some others can connect with both Android and iPhones, but some functions may not be fully supported.
Touch Screen
Yes
Connection
Bluetooth

Connection

Bluetooth
The basic way to connect your smartwatch to your mobile phone and other supported devices, such as wireless headphones.
Strap
Silicone
Case material
Stainless Steel

Case material

Stainless Steel
"The most popular material for constructing a case is more resistant to rust, impacts, and scratches compared to others, but with greater weight."

Features & Functions

Features
Speaker, Microphone

Features

Speaker

Playback of multimedia, notification sounds, or voice.

Microphone
For voice commands or speech.
Features & Functions
SMS, Caller ID, Application / Calls Notification

Features & Functions

SMS
The smartwatch can display SMS messages.
Caller ID

The smartwatch can display the name of the contact who is calling.

Application / Calls Notification

The smartwatch has the ability to transfer notifications from our mobile phone applications such as receiving SMS, Email or a notification from a social media application. Depending on the smartwatch, we may also be able to read it directly from it.
Use
Misc Sports / Gym

Use

The smartwatch has the ability to record the corresponding activity and produce relevant statistics.

Additional Specifications

Sensors
Pedometer, Accelerometer, Heart Rate, Sleep Monitoring

Sensors

Pedometer

Recording steps and distance.

Accelerometer
This sensor allows the device to perceive changes in acceleration. For example, with this sensor, it can count the steps we take when wearing it.
Heart Rate

Embedded heart rate monitor.

Sleep Monitoring

Recording of heart rate and breathing during sleep and diagnosis of problems according to the product. (e.g. restless sleep, lack of deep sleep, etc.)
Protection
-
ATM Rating
-

ATM Rating

The ATM rating on smartwatches indicates their level of water resistance, which tells how well the watch can withstand exposure to water and various pressure levels.

3 ATM (30 meters): Suitable for everyday splashes, rain, and hand washing.

5 ATM (50 meters): Light swimming, showering.

10 ATM (100 meters): Swimming, snorkeling, water sports.

15 ATM (150 meters): Advanced swimming, water sports.

20 ATM (200 meters): Diving, deep water activities.

50 ATM (500 meters): Professional diving, excellent water resistance.
Waterproof
Hand Washing

Waterproof

Hand Washing

You don't need to remove your watch every time you wash your hands. The smartwatch is water-resistant, fully covering frequent washing, making it practical for every moment of the day.
MIL-STD-810
No

Battery

Battery Capacity
-

Battery Capacity

Most smartwatches have a battery capacity of around 200mAh. 2. The size of the battery is not always indicative of the autonomy, as this largely depends on the features of the smartwatch and the functions we have active. 3. For example, a smartwatch with a large color touch screen and 24-hour heart rate monitoring will often require charging even if it has a larger battery than a simpler smartwatch.
Battery Life
5 days

Battery Life

Battery life shows how many days the smartwatch can operate without charging.


It depends on the battery capacity, but also on how much you use it (e.g. active display, GPS, notifications, etc.).


For example, a smartwatch with 2-3 days of battery life is ideal for daily use with all features enabled.


Models with 5–10 days or more are suitable for those who do not want to charge often or use it more "lightly".


The value is especially meaningful when comparing products from the same manufacturer.
Standby Time
-

Standby Time

The amount of time a smartwatch can operate in standby mode, simply connected to a mobile phone with one charge. A typical average is 12 days, but it depends on what each manufacturer defines as standby mode. Size makes sense mainly in comparing products from the same manufacturer.

Dimensions

Case Size
-
Weight
-

AI Features

AI Voice Assistant
No
AI Training Coach
-
AI Health Insights
-

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.