Smart Heart Pulse Oximeter

Effective Measuring Range: 
Saturation 0 to 100% 
Heart Pulse Rate 30 to 250 bpm 
Accuracy:  
Saturation (70%-100% +/-2% or +/-2 digits 
Heart Pulse Rate +/-2% or +/-2 digits 
LED Display: 
Large display with red backlight
Saturation Rate (%) 
Heart Pulse Rate (bpm) 
Pulse Bar 
Battery Status Indicator 
Power Requirements: 
Two AAA Alkaline Batteries (included)