ULTRAHUMAN Ring AIR No Subscription Smart Ring, Bluetooth, Size 9 Matte Grey

Introducing the Ultrahuman Ring Air, the ultra-comfortable fitness wearable. With its notch-free, ultra-thin design and smooth inner shell, the Air Ring offers unrivalled comfort day and night. It is characterised by sleep tracking and ensures a comfortable and unobtrusive experience. Weighing just 2.4 grams, it is the lightest smart ring on the market. This sleek device combines minimalism with precise performance, allowing users to effortlessly monitor sleep, movement, heart rate, heart rate variability and skin temperature.The sleep index was derived to help you understand the different sleep stages such as deep sleep, REM sleep, light sleep and wakefulness. During different sleep stages, different metabolic processes of the body occur for growth, repair, restoration and maintenance.The Movement Index is designed to help you move throughout the day and facilitate better metabolism and cardiovascular function. Track your steps, calories, metabolic equivalents (METs) and moreRecovery