Feature:1. Stable Test: Pressure monitor built in chip to collect clinical data of most hypertension patients, optimize the software algorithm, for stable measurement.2. Arm Type: Electronic blood pressure monitor adopted arm testing type design, simple and quick to be adjusted, which is comfortable to wear and use.3. Home Use: Persistent high blood pressure can damage the heart, brain, kidney and aorta, which is the necessary to have a blood pressure detection device at home.4. Dual Power Supply: Blood pressure machine adopted one button operation for simple to use, suitable for elderly, which can be plugged in or used with batteries.5. Simple Operation: Blood pressure monitor is simple to use, just connect the wrist band to the left hand and press the start button to start measuring, suitable for family use.Specification:Item Type: Blood Pressure Monitor Material: ABSBattery Type: 4 x AAA Batteries (Not Include) Measurement Range: Pressure: 0mmHg-280mmHg Pulse Number: 40 times /min-199 times /minAccuracy: Pressure: 3mmHg Pulse Number: 5%Style: Dual switching, automatic shutdown, battery and USB dual power supply.Package List:1 xBlood Pressure Monitor 1 x Arm Strap1 x Manual1 x Storage Bag