Product Specification Measurement Method: Oscillometer Accuracy: Pressure ±5mmHG; Pulse ±5% Cuff size: Around 135mm 195mm Accessories: carrying case, instruction manual Power supply by: (2) AAA batteries Features 1,Automatic talking or function optional 2,Features with 60 memories recall 3,LCD screen display 4,Automatically power-off to help extend battery life 5,Display Pulse, Systolic Pressure, Diastolic Pressure 6,Certificate: ISO 13485, RoHS, CE 1023 unit package size:65*29*65mm