Smart Ring Men Women Bluetooth Monitor Blood Heartrate Oxygen Ring Size:13 rattle-free hold even on bumpy

rattle-free hold even on bumpy trails or rough off-road terrain

Wide applicability: This product can be widely used in the speed regulation needs of various DC motors

or dressy outfits

contoured fit for most adult face sizes

Smart Ring Men Women Bluetooth Monitor Blood Heartrate Oxygen Ring Size:13 rattle-free hold even on bumpyDiscover the Smart Ring Men Women Bluetooth Monitor Blood Heartrate Oxygen a standout electronics accessories pick featuring waterproof, water resistant, lightweight design for dependable, everyday performance. Specifications Activity Tracked: Activity Tracker,Steps Tracker,Distance Tracker,Calorie Tracker Battery Capacity(mAh): 80 Brand Name: YeasMaie Case Material: Alloy Certification: ce,Dot,FCC,EAC Display screen: No Function: Message Reminder