Arm Blood Pressure Monitor Meter BP Heartbeat Test + Usb Cable+Voice report BP Monitor

Specification:
Condition: new 
Product size: 71*73*32mm (wristband not included) 
Wristband range: 135~195mm 
Display: LCD digital display screen 
Measurement range: blood pressure 0~280mmHg pulse 40~199 times / min 
Compression method: automatic pressurizing pump 
Reducing the way: solenoid valve control pressure 
Measurement error: blood pressure + 3% heart rate + 5% 
Memory capacity: 90 sets of measurement data and time 
Pressure sensing: semiconductor pressure sensor 
Power supply: 2 AAA battery 
Measurement interval: 1mmHg 
Operating temperature and humidity: ~+40 C +10 C /40%~85%R.H. 
Preservation of temperature and humidity: +50 C -20~ C /15%~90%R.H. 
Weight:200g