The Wellue B02 Blood Pressure Monitor is a reliable and accurate device for monitoring and testing blood pressure. It features a digital display and automatic input, making it easy to use. The monitor is powered by either USB Cable or batteries ( Not Supplied ), with a cuff size range of 9-16 inches to accommodate various arm sizes. Fully automatic upper arm blood pressure monitor Large adjustable cuff fits 9–16 inch arms Easy-to-read 3-colour HD display Stores 2 x 120 readings for multi-user tracking Accurate home monitoring of blood pressure and pulse Dual power supply modes for added convenience Simple one-button operation Compact, reliable, and ideal for everyday home use