Omron HEM-RML31 Type B Upper Arm Blood Pressure Monitor Cuff is compatible with selected OMRON blood pressure monitor devices to help ensure you get accurate readings. The wide range D-ring cuff fits an arm circumference of 22-42cm. | Uses: This device is used to get accurate blood pressure readings. | Product Specifications and Features The arm cuff has a circumference of 22-42cm It comfortably wraps around the user’s arm It is compatible with OMRON blood pressure monitors | Directions For Use: Plug the arm cuff into your monitor by inserting the air plug into the air jack securely until it clicks Place your hand inside the cuff loop in the correct position Use the device as instructed | Safety Information: Read the label carefully before use Store in a cool and dry place Keep out of reach of children