1 x Blood Oxygen Monitor. No more guesswork with the PO-1 ! ACCESSORIES: The includes a lanyard that is easy to install with an slot that easily the installation of the lanyard. GRAPHICAL SCREEN: The includes a and easy to read screen that can easily be read under light and it has the option to flip in multiple direction with the of a button so that it can be used for a variety of and fitness uses and read in a variety of angles.