Model: WB-811 - Color: White + grey - Material: ABS plastic housing + nylon oxford fabric - Quantity: 1 - Display Screen: 1.75 inch LCD - Measuring pressure range: 40~280mmHg - Pulse range: 30~160 times / minute - Power: 2 x AA (not included) - Measurement: Oscillograph - Accuracy: +/-5mmHg +/-5% - Working temperature: 5~40'C - Humidity: - Storage temperature: -20~55'C - Uses FUZZY intelligent measurement system - Easy operation with memory function easy reading. - FUZZY intelligent measurement automatic measurement of diastolic blood pressure systolic blood pressure and pulse rate. - Deflated mode: Automatically deflated control - Safety classification: Built-in power type B - Pressure adding method: Vibration pump pressure adding and adjustable method - Quick exhaust method: Open method of quick exhaust valve - Pressure testing: Semiconductor pressure sensor - Packing list: - 1 x Wrist blood pressure meter - 1 x Chinese / English user manual