NexRing Ring Bluetooth Pedometer Oximeter Fitness Tracker Ring for Men & Women with Heart Rate, Sleep Tracker

Smart Ring Sleep Tracker, Fitness Tracker, Heart Rate Tracker, Passometer, THERMOMETER, Blood oxygen monitor and is APP Control, IP67 waterproof, IP68 waterproof. Both iOS & Android supported. Ring Sizes 7, 8, 9, 10, 11, 12, 13.