Features: Portable and Sturdy: The finger pulses oximeter made with premium plastic, small portable size and lightweight makes it easy to handle and carry Fast 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 effect 2.Please allow 1-3cm deviation due to manual measurement Size: 60x31x29mm POWER: Lithiums battery MEASURING: SPO2: 70 percent -99 percent , PR :25-250u0412u0420M PI: 0.4 percent OPERATING MODE: continue working SIZE: 60mmx31mmx29mm CHARGING METHOD: USB TYPE C Package List: 1x Fingertip Pulses Oximeter