economic pulse oximeter(handheld SPO2 oximeter)

Display Format: LCD
SpO2 & pulse monitoring, and histogram of pulse display
LCD graphic display with back light
Easy to use &high accuracy and repetition
Automatic power-off after 8 seconds of idle signal
Light weight (60g), batteries included, small size, portable
Long time continuous use (102 h) with 2 AAA batteries
Low voltage alarm display