Product Specification Measurement: Oscillometer Accuracy: Pressure ±5mmHg; Pulse ±5% Cuff size: Around 135mm 195mm Accessories: carrying case, instruction manual Power supply: (2) AAA 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