Screen Touch Model, Turn ON/OFF by touch on the screen Display: H, L pressure and beats to be showed on same LCD. Range of measurement: 0~300mmHg(0~40KPa) Range of measurement of puls:40~160beats/minute Accuracy: ±0.4KPa Automatic air pump inflation Automatic air release control valve 7 set memory Power: AAA x 2 Operation Temp. :10~40°C 30~75% RH Storage Temp.:-20~+60°C 10~95% RH Suitable Wrist size: 14~20cm Packaging Each piece in a Plastic box, 40pcs. in a carton