We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black smart ring with a 1.04 inch display and charging cable

HTC R02C Smart Ring Black 8 1.04

SKU CH-JDQ9-NESND

Monitors heart rate and blood oxygen from a 1.04-inch ring with long battery life

  • Screen size1.04 in (2.64 cm)
  • Connection optionsBluetooth, bluetooth
  • SizeLarge
  • Supported platformsWindows
  • Camera detailsUnisex Adults
  • Built-in sensorsBlood Oxygen Monitor, Heart Rate Monitor
  • Monitors blood oxygen and heart rate continuously
  • 04 inch display shows key health metrics
  • Bluetooth connectivity syncs data to your smartphone
  • Ultra-thin lightweight design fits comfortably all day
  • Waterproof build withstands daily activities and sleep tracking

HTC R02C Smart Ring Black 8

The HTC R02C is a smart ring sized for large fingers and finished in black. It tracks blood oxygen and heart rate for adults who want continuous health data without a wrist device. The 1.04 inch screen shows readings directly on the finger. Bluetooth connectivity sends data to a paired smartphone.

Thermals Noise Power

The ring has no fan or active cooling, so it runs silently and produces no noticeable heat during wear. Power comes from an internal battery charged by the supplied cable. Normal use lasts multiple days between charges. No external power supply is required.

Charging Cable Utility

The package includes a dedicated charging cable that plugs into the ring's proprietary connector. This cable is the only way to recharge the battery. No dock, adapter or additional accessories are bundled. The cable enables a full recharge in a single session.

How it compares

Measured against everything we stock in Smartwatches & Wearables, at today’s prices. Recalculated every night.

Price $50.99
Pricier than about 60% of the 2,527 comparable items (median $44.99).
Screen size 1.04 in (2.64 cm)
Lower than about 70% of the 228 comparable items (median 1.4 in).

Specifications

Product
Brand nameHTC
Model nameR02C
Product colorBlack
Product typeSmart Watch
Display
Screen size1.04 in (2.64 cm)
TouchscreenNo
Connectivity
Connection optionsBluetooth, bluetooth
Bluetooth supportBluetooth
Ports & slots
ConnectionCharging Cable
Size & build
SizeLarge
Overall height2.8956 L x 7.8994 W x 8.1026 H centimeters
Overall width2.8956 L x 7.8994 W x 8.1026 H centimeters
Product depth2.8956 L x 7.8994 W x 8.1026 H centimeters
Compatibility
Compatible withSmartphone
Supported platformsWindows
In the box
Included itemsCharging Cable
More details
Built-in sensorsBlood Oxygen Monitor, Heart Rate Monitor

Questions about this item

How do I install the HTC R02C smart ring and pair it with my smartphone?

Slide the ring onto your finger, then open Bluetooth settings on your phone and pair with the R02C. The step people miss is granting continuous background location and sensor permissions in the companion app so heart-rate and blood-oxygen data sync automatically.

What maintenance or replacement will the HTC R02C smart ring need over time?

Recharge using the supplied charging cable when the battery runs low. No user-replaceable parts are specified; if the sealed housing or sensors fail, the entire ring must be replaced.

What limit appears first during sustained all-day wear of the HTC R02C smart ring?

Battery endurance is the first constraint; continuous heart-rate and blood-oxygen monitoring will drain the cell faster than the waterproof seal or Bluetooth link degrades.

More in Smartwatches & Wearables

Similar items