ITEM NAME:Automatic Digital Wrist Blood Pressure Monitor BP Cuff Machine Home Test Device Descriptio n Description: 1.Digital pressure monitor with USB charger can be used 45-50 times with full power ,the Voice Broadcast and big backlight LCD display make the measurement much easier and more convenient. 2.Automatic digital blood pressure blood monitor supports 2 users and 99 reading memories for each one with date and time stamp. With a touch of a button you can check your results and compare trends. 3.You will be alerted if an irregular heart beat is detected while checking your blood pressure and BP level bar shows how your reading compares to normal blood pressure measurements. 4.Adjustable wrist blood pressure cuff is comfortable for a wide range of adult users, fitting 5 to 8 inch wrist circumference. 5.The portable wrist bp monitor allows you to track your heart health on the go. Specifications: Parameters: Storage temperature: -20 ℃ ~ 50 ℃ Storage humidity: 15% ~ 90% Working temperature: 10 ℃ ~ 40 ℃ Operating humidity: 40% to 85% Display mode: LCD digital display Measurement method: pulse scanning / oscillometric Measuring range: hypertension / hypotension: 20mmHg ~ 280mmHg Pulse: (40 ~ 200) times / minute Accuracy:  ± 3mmHg ( ± 0.4kPa) Pulse: within  ± 3% of reading Voltage: 3V Package Included: 1X blood pressure monitor Automatic Digital Wrist Blood Pressure Monitor BP Cuff Machine Home Test Device.Pulse: within  ± 3% of reading. With a touch of a button you can check your results and compare trends. Storage temperature: -20 ℃ ~ 50 ℃. Working temperature: 10 ℃ ~ 40 ℃. Display mode: LCD digital display.