Product Specification Measurement: Oscillometer Accuracy: Pressure ±5mmHg; Pulse ±5% Cuff size: Around 220mm 320mm Accessories: carrying case, instruction manual Power supply: (4) AA batteries Features 1,Automatic talking or function optional 2,One touch automatic operation 3,Features with 60 memories recall 4,LCD screen display 5,Automatically power-off to help extend battery life 6,Display Pulse, Systolic Pressure, Diastolic Pressure 7,Certificate: ISO 13485,RoHS, CE 1023 unit size:135*60*93mm