Product name: Blood pressure meter Application: Arm Item Type: blood pressure Display: LED digital display Measuring method: Oscillographic methods Blood pressure: (0~280) mmHg Pulse: ±5% Charging method: USB charging Battery capacity: 400mah Model: -A136 Item number: -A136 Number of uses: 200 Power supply: AC Applicable operating temperature: 10-40 Automatic shutdown function: Yes Pressure mode: Fully automatic Rated power: 1 Rated voltage: 1 Power mode: Electric Specification: English rechargeable voice model Material: ABS Color: Black Package Contents: 1* Blood pressure meter 1* storage bag 1* USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.