SrO Pulse Oximeter Oxygen Sensor Fingertip Oximeter Monitors HeartRate OLED Display Pulse Oximeter  (Multicolor)

Simple and convenient operation with one button. Compact, lightweight, and convenient to carry. Long battery life of 15 hours. Battery indicator on screen. Automatically turn off after 10 seconds when there's no signal. Bluetooth technology enabled. Package Includes: Pulse Oximeter: 1pc Display mode: OLED SpO2: Measurement range: 0~100%, Accuracy: ±3%?70%~100%? Pulse Rate: Measurement range: 25~250bpm, Accuracy: ±2bpm Low perfusion: Range: 0.5%~20%, SpO2 accuracy: ±3% (70%~100%), PR accuracy: 25~250bpm ±2bpm Electrical specifications: Working voltage: D.C. 2.2V ~ D.C. 3.4V, Battery Type: Two 1.5V AAA batteries, Power consumption: smaller than 50mA LED: Wavelength: 666nm/905nm, Output power: <0.1mW Size: 6X3X3 CM ; 50 Gram Weight: 50g (include two AAA batteries)