Power supply: DC5V four AA batteries Poweradapter AC90-260Vorlithium battery
Display: Digital liquid crystal display
Measurement mode: Oscillometric method
Measurement range: Pressure:20-280blood pressure(2.7-37kPa)Pulse:40-160times/min Accuracy:
Pressure:15℃~25℃within±3blood pressure(±0.4kPa)
5℃~40℃(do not include15℃~25℃) within±6bloodpressure(±08kPa)Pulsewithin±5%
Normal working environment:
Temperature:5℃~40℃ Moisture:=85%
Store&transport environment:
Temperature-20℃~55℃ Moisture:10%~93%
Operating air pressure
85 kPa~105 kPa
Operate&store air pressure:
50 kPa~105 kPa
Measurable arm circumference:
About 20cm~34cm
About425g(exclude batteries)
Dimention: 
Weight 129×98×48mm(L"W*H) 

30 sets per carton,
Carton size:
G.W: 14kg
Carton Packing: 0.15x 0.36x 0.52