HTC Smart Ring VIYONA-20 Black Large 1.04" 16 MB 180 Sports IP68 Bluetooth

HTC Smart Ring VIYONA-20 Black Large

The HTC Smart Ring VIYONA-20 is a health and fitness wearable designed for men and women who want continuous wellness monitoring without a wrist band. It tracks sleep, heart rate, SpO, stress levels and daily activity while offering 180+ sports modes. The ring carries an IP68 rating for water resistance and provides up to 8 days of operating time on a single charge with no subscription fees required.

Who this suits and who should look elsewhere

This ring suits users seeking a discreet, screen-free tracker that syncs via Bluetooth to a Windows-compatible app for long-term trend viewing and Family Care sharing. It also includes women’s health support for cycle tracking when the app profile is set accordingly. Buyers who need an on-device display for real-time stats, built-in GPS for phone-free route mapping, or contactless payment functions should consider other form factors.

The specification that decides fit

The ring comes in a single Large size measuring 3.81 L x 9.398 W x 10.16 H centimetres, so confirming your US ring size against the supplied sizing guide before purchase is the critical step. If the Large size does not match your finger, the tracking accuracy and comfort will be compromised and no other size option is offered for this model.