ZBNMY Smart Ring, Silver, Size 9

The ZBNMY Smart Ring is a screen-free activity and sleep tracker in silver, size 9, intended to pair with an iOS or Android smartphone. Its listing claims heart-rate and sleep monitoring, a 5–7-day battery life and no app subscription, but sizing and water-resistance details deserve attention before purchase.

At a glance

Screen-free ring connects to a smartphone over Bluetooth.
Listing describes sleep tracking, activity tracking and heart-rate monitoring.
App use is claimed to be free without a subscription.
A charging case is claimed in the feature description, with a 500 mah battery.

Price

$49.99Save 23%

Reference price: ~~$64.99~~

Price checked: Nov 13, 2026

View offer

Pros and cons

Pros

No display keeps the ring focused on discreet, phone-connected tracking rather than on-wrist screen interactions.
The stated iOS and Android compatibility accommodates phones on either platform.
The no-subscription claim may suit buyers who want ongoing app access without a recurring fee.

Cons

No GPS is listed, so the ring is not presented as a standalone location-tracking device.
The screen-free design means tracking information is viewed in the app rather than on the ring.

Technical specifications

13 specifications

Identity
Brand	ZBNMY

Display and video
Screen technology listed	No Display

Connectivity and controls
Wireless connection listed	Bluetooth
Phone compatibility	Compatible with iOS and Android devices.
Operating systems listed	IOS,Android

Tracking
Feature listed	Activity Tracker
Health metric listed	Heart Rate
Supported application	Sleep Monitor
GPS	No GPS

Dimensions and installation
Form factor	Round
Colour	Silver

Materials and protection
Water resistance listed	Waterproof
Water resistance depth	80 meters

What to know before buying

Listing details to confirm

The listing gives different water-protection descriptions: the details table says “Waterproof” and “80 meters,” while feature text claims IP68 and says handwashing, showers and shallow swimming. These claims are not reconciled, so do not treat the depth or activities as independently confirmed. Battery life is described as 5–7 days and depends on usage. Measure finger circumference using the listing's size-chart method before ordering, as the seller recommends a snug fit or one size smaller.

Who is it for?

A good fit for

Buyers who want a screen-free ring for sleep and activity tracking with smartphone app access.
People using an iOS or Android phone who prefer a tracker without a claimed subscription fee.

Less suited to

Buyers who need GPS tracking or a display on the wearable.
Anyone who needs a confirmed water-resistance rating for a specific swimming or diving use.

ZBNMY Smart Ring, Silver, Size 9 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 100 ratings

5 stars93%93%
4 stars3%3%
3 stars2%2%
2 stars0%0%
1 star2%2%

Aggregate ratings lean strongly positive, but the small amount of rating evidence does not explain what buyers liked or disliked. No written customer feedback is supplied, so these figures cannot establish how well the claimed tracking, fit or battery life works in everyday use. Buyers should weigh the ratings cautiously and focus on the sizing and water-resistance details relevant to their needs.

Frequently asked questions

Does the ring need a paid app subscription?

The listing says the app and health data are available without a subscription. This is a seller claim, not an independently verified service term.

How long does the battery last?

The listing claims 5–7 days per charge depending on usage, and says charging takes 1–2 hours.

Will it work with an iPhone or Android phone?

The listing says it supports iOS and Android. Its FAQ specifies iOS 10.0 and Android 8.0 or later.

How should I choose the ring size?

The seller recommends measuring the finger circumference with its string method and comparing the result with the size chart. It advises a snug measurement or choosing one size smaller to reduce slipping.