Product Name: Finger Oximeter Portable Household Finger Blood Pulse Oximeter with LED Display Model NO.: MK-MD666 Group: Adult Power Type: Battery Material: Plastic Application: Clinical, Household Feature: Reusable Transport Package: Carton Product Description Portable Household Finger Blood Pulse Oximeter with Led DisplayOLED Bi-color screen,imported chip,digital algorithm;One button operation, double monitor function;PR Measuring Range:30~250BPM(the resolution is 1BPM);PR Measuring Accuracy:±1BPM or ±1%(select larger); SpO2 measuring range:0-100% (the resolution is 1%);SpO2 measurement accuracy:70%-100%:±2%,<70% undefined;Compact body, Portable to carry.