A pulse oximeter is used to check how well your heart is pumping oxygen through your body, thus being able to tell you your oxygen saturation levels along with your heart rate.
Easy-to-read two colour TFT display
Low Battery Indicator
Requires 2 AAA 1.5V alkaline batteries (not included)
Automatic shutdown when not finger is inserted after 8 seconds
Dimensions: 60mm x 32mm x 35mm