Uses / Indications: Omron Pulse Oximeter CMS50N is a fingertip type Pulse Oximeter with low battery indicator. Features of Omron Md300C20-Nmr Pulse Oximeter: 6 display modesHD LED display (2 Colors)Brightness Adjustable (10 levels)Non-InvasiveEasy to use (One button operation)Auto Rotate screenStrong slip Resistant Clip with soft Silicone Padding