ULTRAHUMAN Ring AIR - Sleep and Fitness Tracker, Smart Ring for Men and Women, No app fee for standard features, Up to 6 days battery life (Size 12)

Ultrahuman Ring sizes are different from standard ring sizes, so it is important to size yourself before you purchase your Ultrahuman Ring Air Smart Ring. With an Ultrahuman Ring Air Sizing Kit purchase from Argos, you will receive a £10 redemption code on the box to use towards your purchase of an Ultrahuman Ring Air Smart Ring at checkout. Ultrahuman Ring AIR is the perfect sleep tracker ring. Along with insights on all your sleep stages - REM, Deep Sleep, Light Sleep and Wakefulness, get actionable steps to improve sleep so you're ready for the day. The 'Movement Index' is designed to keep you moving all day for optimum glucose metabolism, and to increase your non-exercise energy usage through the day. Meticulously designed for enhanced comfort, this sleek device combines minimal form factor with precise performance, enabling users to effortlessly monitor key health indicators such as Sleep, Movement, Heart Rate (HR), Heart Rate Variability (HRV), and skin temperature