Milavan Smart Ring Fitness Tracker, Black, Size 8

The Milavan Smart Ring fitness tracker is listed in black, size 8, and pairs with Android or iOS phones over Bluetooth. Its stated features include heart-rate and sleep tracking, while the listing also warns that wellness data is for reference and not for medical use.

At a glance

Listing describes automatic heart-rate and other wellness tracking every 30 minutes, and 24-hour sleep monitoring.
Smartphone GPS relies on a paired phone rather than a stated built-in GPS receiver.
The maker recommends using its size chart and measuring finger circumference before ordering.
Health measurements are described as reference data and are not intended for medical use.

Price

$44.99Save 10%

Reference price: ~~$49.99~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

Android and iOS compatibility is listed, with Bluetooth connection and a free app.
Sleep tracking is described as automatic and includes deep, light, REM, and awake periods.
The listing gives a specific three-day battery-life claim.

Cons

The stated battery life is three days, so buyers wanting longer intervals between charges may find it limiting.

Technical specifications

24 specifications

Identity
Brand	Milavan
Model	smart ring
Color	New Black
Listed size	New Black 8
Form factor	Round

Tracking and compatibility
Feature listed	Activity Tracker
Metric listed	Heart Rate
Sleep monitoring	24-hour automatic sleep monitoring
Sleep stages listed	deep sleep, light sleep, REM stages, and awake periods
Compatible operating systems	Android, iOS
GPS	GPS Via Smartphone
Sports listed	Cycling, Multi-Sports, Running, Walking, Yoga
App	Free App

Connectivity and computing
Wireless connection listed	Bluetooth
Storage listed	1 MB

Power and battery
Battery life listed	3 days
Battery capacity	15 milliamp_hours
Battery type	Lithium Polymer
Battery voltage	3.7 volts
Charging time	1 hours

Dimensions and installation
Width claimed	7mm
Weight listed	3.85 ounces

Materials and protection
Water resistance listed	Waterproof
Finish	micro-matte finish

What to know before buying

Listing details to confirm

The listing's title presents a black size 8 ring, while the color/style field says New Black and does not separately establish the sizing system. The claimed 7mm width and 3.85-ounce item weight also appear unusually difficult to interpret for a ring, so verify those details before relying on them. Heart-rate tracking appears in the feature text, while the metrics field lists only heart rate. The listing says waterproof without giving a protection rating, and its 1 MB storage and three-day battery claims are not further explained. Wellness data is for reference only, not medical use. Check the size chart and measure finger circumference before purchase.

What’s in the box

Included

Charging cable
Charging case (1)
Smart ring (1)
User manual

Who is it for?

A good fit for

Adults seeking a phone-connected ring for basic activity, heart-rate, and sleep tracking.
Android or iOS users comfortable using smartphone GPS and a companion app.

Less suited to

People who need a medical monitoring device or clinical-grade health measurements.
Buyers who require a specified water-resistance rating, standalone GPS, or a clearly documented sizing system.

Milavan Smart Ring Fitness Tracker, Black, Size 8 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 199 ratings

5 stars70%70%
4 stars10%10%
3 stars5%5%
2 stars4%4%
1 star11%11%

Aggregate ratings are generally favorable, with most ratings in the five-star category, but a notable share are one-star. Without supplied written feedback, the ratings do not establish what customers liked or disliked. For buyers considering the listed sleep and heart-rate features, the ratings alone cannot confirm tracking accuracy, fit, or real-world battery life.

Frequently asked questions

Does the ring have built-in GPS?

The listing specifies GPS Via Smartphone, so location-related tracking depends on a paired phone rather than documented built-in GPS.

What health information does it track?

The listing identifies heart rate and describes automatic wellness tracking and sleep stages. It says the data is for reference only and not intended for medical use.

How long does the battery last?

The listed battery life is 3 days, and the listed charging time is 1 hours. These are manufacturer claims.

What should I check about the size?

The title says size 8, but the listing does not clarify its sizing system. It recommends checking the size chart and measuring finger circumference.