*Large internal storage can save more than 3000 groups data.Data exchange between USB flash disk and computer by USB interface.
*OLED screen has characteristic of self-illumination,no need of backlight,high contrast,wide angle of view,fast response speed,wide working temperature-range.
*Both left and right side have measurement button.Easy operation by either hand.
*When the battery is in the use of new sustainable work more than 20 hours.