Measurement Method: Oscillometry Memory: 30 times and average Display: 9 digits LCD display, show systolic/diastolic/pulse rate simultaneously Cuff Pressure Range: 0 to 300 mmHg Measurement Range: 40 to 260 mmHg Accuracy: Pressure ?mmHg(0.5kPa) Pulse ?% of reading Pressurization: Automatic inflation by air pump Deflation: Automatic exhaust Rapidly Deflation: Automatic deflation by electromagnetic valve Power Source: AA? alkaline batteries Battery Life: Exceed 300 uses Battery Management: Low battery indicator Automatic Power Off: 3 minutes without any operation, power off Operation Environment: 10℃ to 40℃ 30% to 85% RH maximum Storage Environment: -20℃ to 60℃ 10% to 95% RH maximum Main body Dimensions: 117mm?40mm?16mm Main body Weight: 315g not including battery Cuff Dimensions: Approximately 140mm?20mm Package Accessories: Arm cuff, Operation manual Color Casing Dimensions: 180mm?25mm?20mm One Color Casing Weight: Approximately 565g Carton Dimensions: 635mm?75mm?40mm Carton Gross Weight: Approximately 7kg Remark The DC power jack is selective Medical AC-DC adapter is selective buying