Smart ring activity tracker Ultrahuman Ring AIR — Silver, LiPo 24 mAh, up to 6 days battery

The Ultrahuman Ring AIR — Silver is a compact smart ring activity tracker designed for continuous wearable monitoring in a discreet round form factor. Finished in silver and weighing approximately 2.4 g, the ring is described as slim and lightweight for everyday use. It contains a 24 mAh LiPo battery that provides up to 6 days of typical use and charges via the included USB-C to USB-C cable. The device pairs with Android 8+ and iOS 15+ devices to deliver activity tracking, physiological measurements and sleep analysis through the companion app.

Advantages

The ring’s low weight and 2.4 mm slim profile make it comfortable for prolonged wear while remaining unobtrusive during daily activities and sleep. Built-in sensors capture sleep-related metrics including a summarised Sleep Index and resting heart rate, as well as skin temperature and heart rate variability (HRV) for recovery insights. Onboard features such as a Movement Index and phase response information enable tracking of activity patterns and circadian influences. The rechargeable LiPo cell and USB-C charging support straightforward recharging routines.

Suitable for

• Daily activity monitoring for users seeking minimal, non-disruptive wearables
• Sleep tracking and sleep-quality assessment using summary sleep metrics
• Monitoring resting heart rate, HRV and skin temperature for recovery and wellness insights
• Users who want compatibility with Android 8+ and iOS 15+ smartphones

Key specifications

• Form factor: compact round smart ring, silver finish
• Weight and thickness: approximately 2.4 g, slim profile (~2.4 mm)
• Battery: 24 mAh LiPo battery, up to 6 days typical use between charges
• Charging: USB-C to USB-C cable included for recharging
• Compatibility: Android 8 or later, iOS 15 or later
• Main tracked metrics: activity, sleep index (total duration, resting heart rate, restfulness), skin temperature, HRV, movement index, circadian phase responses

How to use

Wear the ring on a comfortable finger throughout the day and night to enable continuous monitoring. Pair the ring with the Ultrahuman companion app on a compatible Android or iOS device following the in-app pairing steps. Charge the ring using the supplied USB-C to USB-C cable when the app indicates low battery; typical battery life is up to 6 days depending on usage patterns. Review sleep, activity, temperature and HRV data in the app to monitor trends and daily metrics.

Usage recommendations

For best results, wear the ring consistently during sleep and while awake to collect complete data sets. Keep the charging cable accessible and top up the battery before extended trips. Use the app settings to enable personalised nudges and alerts that align with your activity and recovery goals.