Name:  Electronic Blood Pressure MachineMade In ChinaDisplay: LCD display of liquid crystalMeasurement technique: oscillographic detection methodNormal operating environment: temperature 5~40? Moisture= 80% RHTransportation and storage: moisture-20~55? Humidity 10 percent~90 percent RHMeasurable arm circumference: approximately 22 cm~32 cmWeight: approximately 450 GM(Exclude Batteries)Power Supply: DC 6V (4x AAA Battery)Dimensions: 9.8x 12.6x 6.0 cmSafety Category: Internal Power Supply Type BPress the way: vibration plate type pump pressure adjustment modeQuick exhaust mode: Extreme exhaust valve openPressure detection: Semiconductor pressure sensor.Detection of Pulse: stress seHighlightsor for semiconductorsHighlightPressure: 0-299 mmHgPulse: 40-200 Pulse / MinPressure: +-3 mmHgPulse Rate: within +-5%Just install this device on the wrist and switch this Digital Blood Pressure Machine on. The findings will be accurate in a few moments.Using unique products of fabric that do not invite germs so that they can be used safely and comfortably continuously.This blood pressure monitor can generate precise information so that you can confidently find out the test outcomes.1 x Doctor Electronic Blood Pressure Monitor Digital BP Machine1 x User Manual