Features:Portable and Sturdy: The finger pulses oximeter made with premium plastic, small portable size and lightweight makes it easy to handle and carryFast and Accurate-Readings: Our pulses oximeter is a fast and absolutely reliable-gadget to use. It is ideal for the oxygen and pulses readings, and have a very small error margin.User Friendly Design: No keys, put the finger in for about 8 seconds directly reading. Easy reading and Auto power-off after user putting out the finger.Large LED Display & Rechargeable Batteries: Large digital LED display makes monitoring clear and easy to read,Widely Use: Perfect for sports activities, mountain climbing, aviation and those who need to monitors their blood oxygen circulation and heart rate. Widely suitable for children, teenagers, adults, the elderly.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementSize: 60*31*29mmPOWER: Lithiums batteryMEASURING: SPO2: 70%~99%, PR :25~250MPI: 0.4%OPERATING MODE: continue workingSIZE: 60mm*31mm*29mmCHARGING METHOD: USB TYPE CPackage List:1x Fingertip Pulses Oximeter