Large backlit LCD display Graphic user interface Unique doctor program Initial curve shape Biphase square-wave pulse 50 preset programs 20 Manual programs available for professional use 2-in-1 lead wire Smart contact detection 4 Independent channels Channel dissmissal & recall Comprehensive customization stimulation setting Pulse duration s 40~250¦Ì Pulse frequency 1~120Hz Output voltage Max. 90 vpp (at 500 ohm) Output current Max. 180mApp (at 500 ohm) Power supply 3x AA battery Treatment time adjustable from 5 to 90 Minutes Intensity adjustable from 0~15 Operation conditions 10¡ãC~40¡ãC (50¡ãF~104¡ãF) ; 30~85% RH Storage conditions -10¡ãC~50¡ãC (14¡ãF~122¡ãF) ; 10~95% RH Item size: 170x125x48mm