The majority of users favorite-- pearl operating system is easy to operate Midi control and input audio signal control light flashing effect 10 groups playback, can add 15 groups playback 2048 loop control, can control 240 computer light simultaneously (4 groups isolated DMX512 output) Abundance fixtures or computer light operation programs, updates will continue to offer in the future Built-in memory inside can save and backup show files USB memory stick connection Equipped LCD display N.W:13KG G.W:29KG DIM:64.5x44.5x14.5cm