Features

•Light weight， portable use and simple operation

•Legible LED screen

•Tow pcs of Silicones are very suitable for your finger

•Battery low-voltage indication

•Automatically power off in 16 seconds later when no signal is detected

•2 * 1.5V AAA dry batteries， can supply energy for more than 20 hours

•Display Mode:LED display

•SpO2 Measuring Range:0%~100%， (the resolution is 1%).

•Accuracy:70%~100%:±2% ，Below 70% unspecified.

•PR Measuring Range:30bpm~250bpm， (the resolution is 1bpm)

•Accuracy:±2bpm or ±2% (select larger)

•Resistance to surrounding light: The deviation between the value measure