Smart ring Ultrahuman Ring Air size 08 — gold, round tracker, 6-day LiPo battery, 8.1 mm width

The Ultrahuman Ring Air size 08 in gold is a round smart ring activity tracker designed for daily wellness monitoring. At 8.1 mm width and weighing just 2.4 g, this sleek ring offers continuous tracking of sleep, activity and physiological signals while remaining discreet on the finger. It includes a 24 mAh LiPo battery rated for up to 6 days of use, is compatible with Android and iOS 15, and ships with a USB-C to USB-C charging cable for convenient recharging.

Advantages

The Ultrahuman Ring Air combines a lightweight, low-profile form factor with multi-sensor tracking to measure sleep quality, skin temperature, heart-rate variability and movement. Its compact 8.1 mm width and 2.4 g mass minimize interference with everyday tasks. Built-in features such as the Sleep Index, Movement Index and HRV-based recovery insights provide consolidated health metrics without requiring a bulky wearable. The provided USB-C charger and cross-platform compatibility make setup and daily use straightforward.

Suitable for

• Users who want continuous sleep tracking and sleep quality metrics
• People seeking lightweight, discreet activity and health monitoring
• Individuals tracking skin temperature changes and physiological responses
• Those interested in HRV-based recovery and movement guidance
• Android and iOS 15 users wanting a compact wearable with multi-day battery life

Key specifications

• Form factor: round smart ring, gold finish
• Ring width: 8.1 mm
• Weight: 2.4 g
• Battery: 24 mAh LiPo, up to 6 days typical use
• Compatibility: Android and iOS 15 (requires compatible phone and app)
• Charger: USB-C to USB-C charging cable included
• Primary sensors and metrics: sleep index, skin temperature, heart-rate variability (HRV), movement/activity tracking

How to use

Wear the ring on a finger that provides a comfortable, stable fit and open the Ultrahuman app on a compatible Android or iOS 15 device to pair the ring. Charge the ring using the supplied USB-C to USB-C cable before first use and follow on-screen pairing instructions. The ring continuously collects data while worn; sleep and activity metrics appear in the app where you can view the Sleep Index, Movement Index, temperature trends and HRV-based recovery scores. For best results, wear the ring overnight for sleep analysis and during daily activity periods for movement and temperature trend tracking.

Usage recommendations

For reliable readings, ensure the ring fits snugly without being too tight, wear it consistently during sleep and active periods, and keep the ring charged (typical charge cycle provides up to 6 days of use). Use the Ultrahuman app to customise notification preferences, review Sleep Index and PRC insights, and follow personalised nudges to support recovery, sleep hygiene and daily movement.