We are offering pocket fingertip spo2 pulse oximeters. Description:the 5100 pulse oximeter, based on all digital technology, is intended for noninvasive spot-check measurement of functional oxygen saturation of arterial hemoglobin(spo2).The product is suitable for being used in family, hospital, oxygen bar, community healthcare, physical care in sports (it can be used before or after doing sports, and it is not recommended to use the device during the process of having sport) and etc. features:1.anti-movement, good low-perfusion performance.2.pop-up menu to setup alarm limits3.small in volume, light in weight and convenient in carrying4.operation of the product is simple , low power consumption5.spo2 value display6.pulse rate value display, bar graph display7.pulse waveform display8.the display mode can be changed9.a pulse rate sound indication10.with measured data overruns limits and low-voltage alarm function11. Battery voltage indication12.automatically power off function13.display format and alarm limits can be saved after power off parameters:display mode: 0.96"dual-color oled displayscreen resolution: 128*64spo2 measuring range: 0%100%, (the resolution is 1%).Accuracy: 70%100%: 2% , below 70% unspecified.Pr measuring range: 30bpm250bpm, (the resolution is 1bpm)accuracy: 2bpm or 2%, (select larger)measurement performance in weak filling condition:spo2 and pulse rate can be shown correctly when pulse-filling ratio is 0.3%.Spo2 error is 3%, pulse rate error is 2 bpm or 2% (select larger).Power consumption: less than 50mavoltage: dc 3.0vpower supply: 1.5v (aaa size) alkaline batteries x2battery working hour: theoretical number is 24 hours.Safety type: interior battery, bf type