BLOOD PRESSURE MONITOR DIGITAL MEDISIGN BPM 63 UPPER ARMMedisign Digital Description Includes : 1 x Digital Automatic Blood Pressure Monitor ; 1 x Arm Cuff (22 42 Cm) ; 4 x Batteries ; 1 x Illustrated User Guide . Specifications : Measuring range: Pressure: 30 to 280 mmHg (in 1 mmHg increment) , Pulse: 40 to 199 beat minute , Static accuracy: Pressure: +3mmHg Pulse: +5% of reading , Measuring resolution: 1mmHg , Rated Power: Input AC200V 50 60Hz Output DC6V , Power: 1. 5V AAA size batteries 4 (Alkaline