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. :10~40C 30~75% RH Storage Temp:-20~+60C 10~95% RH Suitable Wrist size: 14~20cm Origin China Packaging Each piece in a plastic box, 40pcs. in a carton