HAD(Heart pulse Arrhythmia Detection) Average for|ast 3 measurements 120 memory x 2 users Low voltage warning Backlight function optional The power converter LCD size:64.5*45.5mm Unit size:132*102*81mm Weight: About 455g (battery and cuff included) 1）Measurement Procedure:Oscillometric corresponding to Korotkoff method: Phase l: systolic PhaseV : diastolic 2）Display:Digital display 3）Measuring range:Pressure: 30 to 280 mmHg (in 1 mmHg increment) Pulse: 40 to 199 beat/minute 4）Static accuracy:P