Electronic health products Product dimensions: 11.8*9.5*6.5 cm Display: LCD,Liquid crystal digital display Measuring method: Oscillographic determination method Blood pressure measuring range: 0-37.3kpa(20-280mmHg) Pulse measuring range: 40-199 times/min Wrist band display range: 0-39.9kpa(0-299 mmhg) Accuracy: ±0.4kpa(±3mmHg) Power supply: 4pcs*AAA 1.5V battery, 6V User1 & User2 99 groups memory Date & time display Delete single or all groups memory mmHg / kkPa switchable Low battery power indicator Automatic inflation and deflation Screen size: 3.3* 4.4 cm