* It is light ,small in size and easy to carry;
* Accurately measure SpO2 value and Pulse Rate value;
* Large True color OLED display of SpO2, PR, Pulse Bar,PI & Plethysmogram;
* Multi-direction display, various display modes (Automatic change of display
  4  directions by built-in orientation -sensor);
*  Automatic start measuring after putting finger into rubber cushions;
* Power off automatically without signal for about 8 seconds;
* More than 30 hours continuous working time with 2AAA alkaline batteries;
* Audible & visible alarm function, high & low alarm limits adjustable;
* Pulse beep function;
* Low battery voltage indication.