Product Specification Measurement: Oscillometer Accuracy: Pressure ±3mmHg; Pulse ±5% Cuff size: Around 146mm 446mm Accessories: carrying case, instruction manual Power supply: (4) AA batteries Features 1,Hypertension Indicator 2,Fully automatic inflation and deflation 3,Super Large display LCD 4,Features with 60 memories recall 5,Durable fan-shaped cuff 6,Display Pulse, Systolic Pressure, Diastolic Pressure 7,Certificate: ISO 13485,RoHS, CE 1023