DISPLAY RANGE 
  Functional Oxygen Saturation (SpO2):    0-99%
  Pulse Rate (PR):  25-250 bpm
 

ACCURACY
  SpO2 Delared Accuracy Range: 70%~100%
     SpO2 Accuray: ±2%
  PR Declared Accuracy range: 25-250 bpm
     PR Accuray: 3 bpm

MEASUREMENT RESOLUTION
   Oxygen Saturation (%SpO2):    1%
   Pulse Rate (PR):    1 bpm
Power Requirements
  Specification of alkaline batteries: 2 AAA(LR03)
  Operating current: 25-50mA

Operating mode: Spot checking
Degree of production against hazards of explosion: IP22

Physical specification
  Product dimensions:57*30*31MM
  Product net weight: 28g   
  Gift box dimensions:9*6*4cm
  package: 100pcs/ctn
  carton box size:47*32*20cm 
  GW(without battery):5.5kgs
  GW(with battery):7.8kgs