The FDA approved PC60A is used in hospitals everywhere, as well as home healthcare, community medical centers, and more. This pulse oximeter monitors oxygen saturation and pulse rate. U.S. Doctor Recommended. Features: FDA & CE Approved Measure SpO2 levels and pulse rate quickly and accurately High-quality LCD display 8-second auto-shutoff for power saving Very compact and convenient for use anywhere "Low batter" light indicator 1 year warranty Technical Specs: SpO2: Range: 70%-99% Accuracy: 70%-99% ±3% Resolution: ±1% Pulse Rate: Range: 30-240bpm Accuracy: ±2bpm or ±2% (whichever is greater) Resolution: ±1bpm Power: 2 AAA alkaline batteries Battery life: 30 continuous working hours Dimensions and Weight: 2.6in (L) x 1.4in (W) x 1.3in (H) 2.1oz (40g) (includes two AAA batteries) Accessories include: Two AAA batteries, Lanyard, User Manual, Cloth Carrying Pouch, Quality Certificate