Accurate Blood Pressure Arm Test Machine With Voice Function

Features:
The clock featureIntelligent pressureLCD digital display,legibleAn irregular heartbeat tipsWHO warning message functionThe overpressure protection function.Voltage power detection,Low power consumptionDouble mode,each of the 90 set of measurements of memory
Intelligent presurize,live nonvoice (optional),Serial port (optional)
Using the oscillometric blood pressure measurement measures the blood pressure accurately 
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: 1mmHgOperating temperature and humidity: ~+40 C +10 C /40%~85%R.H. Preservation of temperature and humidity: +50 C15%~90%R.H.Weight200gNotes:The wristtype electronic sphygmomanometer is sensitive, so it is necessary to maintain a correct sitting posture during the measurement process. 
After 5-10 minutes of rest, keep breathing evenly, and the measurement site and the heart site should be at the same level. 
Usually, the measurement of the wrist is higher than the measurement of the heart, which results in a lower blood pressure value and a lower level than the heart. 
Package includes:1x Digital Wrist Bp Blood Pressure Monitor Meter