Ø Battery locker providers more safety.
Ø Anti-blood-block design prevents blood blocks from the pressure of the oximeter.
Ø Finger position indicator helps right locate nail center to get the best accuracy.
Ø Upgraded software automatically compensates Infrared LED attenuation.
Ø Position-setting design helps keep infrared LED and detector always on a straight line.
Ø Finger skid-resistance design helps prevent finger skidded from the oximeter