Brand AOEOM Model ABP-W6200-5 Color White + black + grey Material ABS + acrylic Quantity 1 Display Screen 2.5" LCD Measuring range 30~280 mmHg Functions Measures blood pressure heart rate and pulse Measuring Method Pressure sensing measurement oscillography Memory Function 240 group memories Pressure Accuracy +/- 3mmHg Voice Function Yes Pulse Accuracy +/-5% Exhausting Method Auto quick exhausting Power 2 x AAA Certification CE / RoHS Features Display pressure value and pulse times at the same time easy operation lightweight and accuracy; durable use; Date / Time remaining power display auto power off if no operation within 3 minutes. Packing List 1 x Auto blood pressure monitor 2 x AAA batteries 1 x Chinese user manual