TPHealth Sport Finger Pulse Oximeter,Spo2 Monitor with Neck/Wrist Cord,OLED Display,White The TPHealth Sport Fingertip Pulse Oximeter provides a accurate information about your blood oxygen saturation levels and pulse rate with two color OLED display and fore display modes Low-power consumption,low voltage indicator,automatically power off in 8 seconds when there is no signal,automatic easy to use and one-step operation Accommodates wides range of finger sizes from pediatric to adult.It can be used by a variety of sports enthusiasts,including others interested in measuring oxygen saturation and pulse rate. Newest design,fashion,small in volume,light in weight,and conveninent to carry Please Note:This is not a professional medical device,only for sport use.And use on 2 AAA batteries(not included)