Ultrahuman Ring Air Smart Tracker Color:Matte Grey PhD and designed with input

PhD and designed with input from top pro athletes and sports medicine professionals

closely matched and leaves no gaps

20 Lumens - 60hrs Material Aluminium Switch Type Front Water Resistance IPX4

10cm*8cm*6cm

making it a hands-free head torch which requires no manual control at all

Ultrahuman Ring Air Smart Tracker Color:Matte Grey PhD and designed with inputWorlds most comfortable wearable 2. 4 gms light. 11x lighter than a typical smartwatch. 2. 4 mm sleek. Discreet design for everyday use. Glides with you through your day, feeling lighter than air. Its there when you need it, and invisible when you dont. Form factor so discreet, its easy to forget youre wearing it but hard to ignore its capabilities. Wake up to your sleep insights The Sleep Index, intelligently designed to be your sole metric for sleep