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Black smart ring with smooth curved band

HTC Smart Ring ZBNMY Black Size 9

SKU CH-XJ51-GB54H

A fitness tracker ring monitors heart rate, blood oxygen and sleep stages around the clock while lasting up to 7 days per charge

  • ColorBlack
  • TypeSmart Watch
  • SizeLarge
  • OS CompatibilityWindows
  • CameraActivity Tracker
  • ConnectivityBluetooth
  • Free app with no subscription fees ever
  • Seven-day battery life between charges
  • 24-hour heart rate and blood oxygen tracking
  • Automatic sleep stage and wakefulness monitoring
  • IP68 waterproof for daily wear

Smart Ring ZBNMY Black Size 9

The HTC Smart Ring ZBNMY is a wearable fitness tracker designed for women and men who want continuous health monitoring without a recurring subscription. It records heart rate, blood oxygen and sleep stages around the clock while tracking steps, energy expenditure and distance. The ring pairs with Android or iOS devices via Bluetooth and offers up to seven days of battery life on a single charge.

Free App and IP68 Waterproofing

The companion application provides lifetime access with no subscription fees, letting users view detailed sleep reports, real-time heart-rate trends and activity summaries at any time. An IP68 rating means the ring withstands dust ingress and immersion in water, so it can be worn while washing hands, swimming or sweating during workouts without removal.

Sizing Method and Daily Wear

Correct fit depends on measuring finger circumference with the string method shown in the product images and selecting the matching size from the chart; pulling the string slightly tighter or choosing one size smaller helps prevent the ring from slipping off. The package includes only the ring and a user manual, so setup is limited to charging, pairing via Bluetooth and following the app guided tutorial.

Highlights

  • Free app with no subscription fees ever
  • Seven-day battery life between charges
  • 24-hour heart rate and blood oxygen tracking
  • Automatic sleep stage and wakefulness monitoring
  • IP68 waterproof for daily wear

Specifications

BrandHTC
ColorBlack
TypeSmart Watch
SizeLarge
OS CompatibilityWindows
CameraActivity Tracker
ConnectivityBluetooth
BluetoothBluetooth
ConnectorUser Manual
SpecificationActivity Tracker, ZBNMY, User Manual
Height4.3942 L x 7.5946 W x 7.8994 H centimeters
Width4.3942 L x 7.5946 W x 7.8994 H centimeters
Depth4.3942 L x 7.5946 W x 7.8994 H centimeters
Package ContentUser Manual

Questions about this item

Will the battery need replacing after a certain number of charge cycles?

The ring delivers up to 7 days of use per charge; when capacity fades the sealed unit must be replaced as the battery is not user-serviceable.

What stops continuous heart-rate tracking during an all-day workout?

The 7-day battery rating assumes typical sampling; sustained 24-hour monitoring will drain the cell faster and hit the low-power limit first.

How warm does the ring get and how much power does it draw when worn 24/7?

The IP68-rated chassis stays skin-temperature during constant wear, and the Bluetooth radio only wakes for brief sync bursts, keeping draw minimal.

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