Accomodate wide range of finger size.
Measured after a little rest if you did strenuous exercise.
and oxygen should not be measured at the same time.
LED digital display,clearly show your blood oxygen saturation levels,pulse rate and strength.
Design for sports enthusiasts or anyone interested in measuring their blood oxygen saturation levels and pulse rate.
Voltage: 2.6~3.6 V
Working Current: 30mA
Package Weight: 40g/1.4oz
Package Size: 13*9*3cm/5.1*3.5*1.2in
Color: Black/blue/orange/green/purple (optional)