DESCO MEDICAL INDIA Pulse Oximeter Specifications: 1) Display Type : OLED display 2) SpO2 Measurement Range : 70%~99%, Accuracy : ±2% on the stage of 80%~99% ±3% (when SpO2 value is 70%~79%) Below 70% no Requirement Resolution ±3% 3) PR Measurement Range : 30BPM-240BPM, (the resolution is 1bpm) Accuracy : ±1BPM or ±1% (the larger one) 4) PI Index : Measurement Scope : 0~20 5)  Power : AAA 1.5V alkaline batteries Power Consumption : below 30mA Automatic Power- off : the product shuts off by itself when no finger is in the product ≥8 seconds 8) Automatic Startup : every 5 s instrument will automatically detect the signal, after the hole with my finger, timely automatically boot; Accelerometer Function : finger movement, the screen display will change with the accelerometer changes. Dimension : 58mm x 36mm x 33mm 11) Operating Environment : Operation Temperature : 5°C~40°C Storage Temperature : -10°C~40°C Ambient Humidity : 15%~80% on operation 10%~80% in operation Air Pressure : 70kPa~106kPa Features : Two Parameters : SpO2, Pulse Rate Four Direction adjustable Rotation Low Voltage Indicator Automatic Power Off in 8 seconds when there is no signal Small in volume, light in weight, & convenient to carry. Product Color : White and Black Contents with Product 1 x Pulse Oximeter Box 1 x Pulse Oximeter Machine 1 x Product Manual 1 x "AAA" Batteries Set of 2 1 x String for Machine 1 x Plastic Case for Product