An oximeter is a small, lightweight device used to monitor the amount of oxygen carried in the body.Two colour OLED displayAutomatic power off- 8 secondsLow voltage indicator Four direction adjustableLight weight and travel friendly with attachable lanyard Contains:1 x Pulse Oximeter1x Attachable Lanyard1x Instruction Manual and Certificate Technical InformationModel:C101A3Battery operated, 2 x AAA (Not Included)Two parameters: SP02, Pulse RateSP02 (Blood Oxygen Saturation) - Measurement Range: 70%- 99%Two colour OLED displayFour direction adjustablePacking size 90x60x38mm