Thermometer & body tester - this product is an automatic electronic blood-pressure monitor for the blood pressure measurement at wrist position, it could measure the blood pressure value and pulse quickly and conveniently.features a non-invasive blood pressure determination with a high level of accuracy and repeatabilityautomatic measure of the systolic pressure, the diastolic pressure and the heart pulsewhen the measuring value is at a high level,it will have shot and quick beep,but when it's normal,it will have long beeplarge lcd display60 memory for racallauto power offpractical,superior qualityeasy to usesuitable for adult, pediatric and neonatal patient specifications displaydigital lcdmeasuring rangepressure 40mmhg to 280mmhg pulse 30 to 160 times/ min accuracypressure: ±5mmhg;pulse: ±5% measurable arm's perimeter135mm-195mm power supplydc 3v two batteriesworking environmenttemperature: 5 "ƒ-40 "ƒ; humidity ‰¦80%rhstorage/transport environmenttemperature: -20 "ƒ-55 "ƒ; humidity 10%rh-93%rhdimensions6 x 6.3 x 2.6cm / 2.36" x 2.48" x 1.02" (l x h x d)weight196g / 6.91ozpackage includes 1 x wrist blood pressure monitor1 x manual .