Smart ring Ultrahuman Ring AIR — sleep and fitness tracker, Titanium, Size 9, up to 6 days battery

Ultrahuman Ring AIR is a lightweight smart ring activity tracker in a round titanium form factor designed to monitor sleep and fitness. Weighing approximately 2.4 g and measuring about 2.4 mm in thickness, the ring offers discreet, day‑to‑day wear and continuous physiological monitoring without a recurring app fee. Core tracking includes sleep scoring, heart rate and heart rate variability insights, skin temperature trends, movement monitoring and timed activity detection. The device pairs via Bluetooth with compatible Android (8.0–13.0) and iOS (15–16) devices and is powered by an integrated 24 mAh LiPo battery that provides up to 6 days of use. Size 9 fits both men and women and package contents include a USB‑C to USB‑C charging cable.

Advantages

The Ultrahuman Ring AIR combines a low weight and slim profile for comfortable all‑day and night wear, enabling continuous sleep and activity measurement with minimal interference. Built‑in sensors provide sleep index scoring, skin temperature tracking and HRV metrics to support recovery and circadian rhythm analysis. The device supports core fitness and wellness tracking without mandatory subscription fees, and its multi‑day battery life reduces charging frequency.

Suitable for

• Daily sleep monitoring and sleep quality assessment
• Activity and movement tracking for general fitness
• Tracking physiological trends such as skin temperature and HRV
• Users seeking a discreet wearable for continuous data collection

Key specifications

• Form factor: round titanium ring, slim profile (~2.4 mm thickness)
• Weight: approximately 2.4 g
• Sensors and measurements: heart rate, heart rate variability (HRV), skin temperature, movement detection, sleep scoring
• Connectivity: Bluetooth
• Battery: Lithium Polymer (LiPo), 24 mAh; up to 6 days of typical use
• Compatibility: Android 8.0–13.0 and iOS 15–16
• Included accessories: USB‑C to USB‑C charging cable
• Size: 9 (unisex fit)

How to use

Wear the Ultrahuman Ring AIR on the finger that provides the most comfortable fit, ensuring the ring sits snugly but not tightly for consistent sensor contact. Pair the ring with a compatible smartphone using Bluetooth and follow the device setup prompts to enable data collection and sync. Wear the ring continuously for best results: it is intended for 24/7 wear to capture overnight sleep, daytime activity and physiological trends. Charge the ring using the supplied USB‑C cable when the battery level is low; typical interval between charges is up to six days depending on usage patterns.

Usage recommendations

For reliable sleep and physiological insights, wear the ring overnight and during daily activities, keep the sensor area clean and dry, and sync with your smartphone regularly to back up data. If measuring skin temperature changes or HRV for recovery, maintain consistent wear patterns and avoid sudden or prolonged removal during monitoring periods.