Smart Ring Ultrahuman Ring AIR – Sleep & Fitness Tracker, Titanium, Size 7, 6-day Battery

The Ultrahuman Ring AIR is a compact titanium smart ring designed for continuous sleep and fitness monitoring. Built for men and women, Size 7 houses a 24 mAh LiPo battery with up to 6 days of typical use. The ring measures fingertip biometrics to provide detailed sleep staging, heart rate variability, skin temperature and activity tracking. Standard features work with Android 8+ and iOS 15+ via Bluetooth, and no subscription is required for core tracking functions.

Advantages

Fingertip sensing delivers higher accuracy than wrist devices by using increased blood flow and arteriole density at the finger, improving readings for sleep stages, HRV and skin temperature. The ring’s round titanium body is lightweight and durable, and at approximately 2.4 grams it offers a near‑imperceptible feel that supports 24/7 wear. A 6‑day battery life reduces frequent charging while USB‑C charging ensures convenient recharging.

Suitable for

• People who want precise sleep stage and recovery tracking
• Users seeking a low‑profile, comfortable alternative to smartwatches
• Fitness‑minded individuals monitoring heart rate, active minutes and recovery
• Anyone who prefers a durable titanium wearable for everyday use

When it may not be suitable

This ring may not be suitable for users who need continuous on‑screen notifications or the broad app ecosystem of a smartwatch, since it focuses on biometric monitoring rather than general watch functionality. It is also sized to fit specific finger measurements, so an incorrect size will affect comfort and sensor accuracy.

Key specifications

• Form factor: round titanium smart ring
• Weight: approximately 2.4 g
• Battery: 24 mAh Lithium Polymer (LiPo), up to 6 days typical battery life
• Connectivity: Bluetooth (mobile pairing with Android 8+ and iOS 15+)
• Sensors and tracking: heart rate, heart rate variability (HRV), sleep stages, skin temperature, activity (steps/active minutes)
• Included accessories: USB‑C to USB‑C charging cable

How to use

Wear the ring on the finger specified by the manufacturer sizing guide to ensure proper fit and accurate readings. Pair the ring with the Ultrahuman mobile app using Bluetooth on a compatible smartphone (Android 8+ or iOS 15+). Charge the ring using the supplied USB‑C cable and follow the app prompts to calibrate sleep and activity tracking. Regularly sync the ring with the app to view sleep scores, recovery data and activity summaries.

What to consider before purchase

• Choose the correct ring size to ensure comfort and reliable sensor contact
• Consider that the device prioritizes biometric monitoring over smartwatch features like extensive notifications or third‑party apps
• Mobile compatibility requires Android 8+ or iOS 15+

Usage recommendations

For the most accurate sleep and recovery insights, wear the Ultrahuman Ring AIR continuously, keep the firmware and app updated, and follow sizing guidance for a snug but comfortable fit. Use the ring alongside recommended rest, hydration and controlled breathing exercises to support recovery scores.