This palm style sphygmomanometer merges the bulb air valve and dial into a single unit * This enables you to take a reading with one hand and free up your other hand to use your stethoscope perform other operations or hold the patient still * The trigger release valve enables you to smoothly deflate the cuff also with just one hand * The bright high contrast dial on the unit allows the user to quickly read blood pressure measurements accurately. The large dial is approximately 2.25 in diameter ensuring the numbers are easy to see and read * This premium cuff is lined with soft fabric to ensure patient comfortable during use. The cuff is sized to fit large adult arms from 8 � to 16 * The attached D-ring makes it easy to fasten onto your own arm for self-readings * The unit comes complete with a zippered case