Electric Arm Fully-Automatic Talking Blood Pressure monitor/meter 1.Super LCD display 2.90 sets memory for analysis 3.Measure scope Pressure:(20 300mmHg) Pulse number: (30 160)hops/minute 4.Accurate degree Pressure:(±5mmHg)Pulse number: within±5% 5.Power supply DC6V (2A)4Pcs 6.Normal work environment Temperature 5C 40CWet degree ≤80%RH 7.Reserve transport Temperature -20C 55C Wet degree 10%RH 93%RH 8.The week in measurable wrist is long about 220mm 320mm 9.Weight 355g (contain arm strap,battery exception) 10.Shape size( host) L135mm×W93mm×H60mm Irregular heart beat indicator