This is a lightweight painless device, which is non-invasive and measures the oxygen saturation in your blood as well as your pulse rate. It can quickly detect changes in how your blood carries oxygen within your body. The universal finger clip allows the oximeter to fit a range of finger sizes from small children to adults. Ideal for use in the medical environment as well as at home and in the workplace.- Lightweight device- Noninvasive and painless- Dimensions/weight: 57x31x32mm, 50g weight- One button operation is simple and easy to use- Measures Spo2 and pulse rate in less than 10 seconds- Measuring range of oxygen saturation: 70-100%, accuracy: +/-2%- Pulse rate: 30-240bpm (accuracy: +/- 2%)- Pulse rate value display, bar graph display- Pulse waveform display- Low in power consumption- Auto turn off in 8 seconds if no signal- Requires 2 x AAA batteries (not included)- Includes lanyard and user manual quantity: