Display: 5.2-inch LED LCD screen Cuff range: 22 ~ 30cm, 30 ~ 42cm (optional) Measurement range: 0 ~ 40kPa (0 ~ 300MMHG) Pulse range: 40 ~ 180 minutes Measurement accuracy: (+/-)3mmHg (0.4kPa) Net weight of single item: 0.405kg (excluding cuff) Power supply mode: lithium battery Battery capacity: 2200mAh