CE-Approved Fully Automatic Wrist Blood Pressure Meter Key Specifications/Special Features: Dimensions (L x W x H): 135 x 94 x 50mm Cuff size: 300 x 72mm Weight: 500g (including battery) Power voltage: DC6.0V (four AA alkaline batteries or medical DC power supply of 6V 800mA) Battery life: four months when used three times per day Working current for pump: 550mA Measuring current: 15mA Packaging: one machine per leather bag, one bag per colored box, and ten colored boxes in one outer box Size of leather bag: 165 x 115 x 70mm Size of colored box: 180 x 120 x 90mm Size of outer box: 465 x 195 x 250mm Label: see drawing 622O-MS-P08 Display system with six-digit LCD screen Measuring method: oscillometric method Measuring range: 2.7 to 40kPa (20 to 300mmHg) Accuracy: 0.5kPa (4mmHg) Power source: four AA batteries Pressurization: by an air pump (made in Japan) Deflation: automatic exhaust Automatic power off after five minutes of nonuse to save energy Cuff and body is separated, more convenient operation Operating environment: -5 degrees Celsius, less than 95RH