Arm type digital monitor LED display automatic monitor USB charg

I am very glad to meet you here. You can choose to buy with confidence in my store. All our products guarantee quality and after-sales service. If you have any questions, you can communicate with me as soon as possible.I can guarantee that our products are all selected from the original factory and shipped. Under the same quality assurance, our price must be more advantageous, and we will deal with any problems with the products as soon as possible. I hope you can see what you like. Products, I also hope you collect my store We are a newly opened store, and we don't have much money to promote it, but our product quality must be better to meet everyone's pursuit of high quality and preferential prices! Thank you again for your support!Product Name：Electronic MonitorDisplay Method：LCD Digital DisplayPrinciples of Testing：Oscillometric Measuring Method Measurement Range：0mmHg~290mmHg(0.0KPa~38.7KPa)25mmHg~155mmHg(3.33KPa~20.67KPa)Pulse Measurement Range：40th / min ~ 180th / minMeasurement Accuracy：Pressure: ±3mmHg (±0.4KPa) Pulse: ±5%Pressurize：Automatic Pressurization by Air PumpDepressurize：Automatic Exhaust Method through Fixed Row Pressure ReductionExhaust：Automatic rapid exhaust through Solenoid ValveSecurity Structure：When it exceeds 300 mmHg, the Solenoid Valve is used for rapid exhaust.Power Type：4 x AA alkaline batteriesDimension：128 (Length) × 98 (Width) × 57 (Height) mmWeight：About 375 grams (without batteries)Applicable Range of Armband：Arm Circumference 22cm~32cm (42cm optional)Use Temperature and Humidity：Temperature: 5℃~+40℃ Humidity: ≤ 80%Storage Temperature and Humidity：Temperature: -10℃~+55℃ Humidity: ≤ 80%Atmospheric Pressure Range：70KPa~106KPa