Smart Ring for Men & Women – 24/7 Heart Rate & Blood Oxygen (SpO2) Monitor IP68 & 5ATM Waterproof Fitness Tracker with Multi-Sport Modes Sleep Analysis – Compatible with Android & iOS

Metal. Item Type: Smart Ring. Compatibility: All Compatible. Application Age Group: ADULT. Function: Passometer, fitness tracker, sleep tracker, Call Reminder. Type: Wrist Strap. Note: Charging case without Type-C cable, You need to prepare your own Type-C cable. Size: 8 Inner diameter 18.2mm, 9 Inner diameter 19.0mm, 10 Inner diameter 19.9mm, 11 Inner diameter 20.7mm, 12 Inner diameter 21.5mm. Features: High Quality: Stainless steel material has excellent corrosion resistance and can keep the surface smooth and intact even in humid or sweaty environments. This means you can wear it for various activities without worrying about damage caused by environmental factors. Smart Digital Display: The LED digital display can easily view the current time, steps, heart rate, blood oxygen and sleep time, without having to frequently take out your phone or watch, making time management more convenient. Multi-function: supports mountaineering, cycling, running and other sports modes, and can monito