The Z.ONE Arm Blood Pressure Monitor is a dual-user device approved by the NHS UK for monitoring blood pressure in adults. It is battery-powered and includes 4 AAA batteries. This upper arm monitor from Reliance Medical has a sleek black design, LCD display, and automatic features. The set includes a cuff and has a band size of 16.9 inches. With a compact product dimension of 2 x 1.4 x 1.5 cm and a weight of 460 grams, this blood pressure monitor is convenient and accurate for daily use.