1)Input voltage:230/220/120V,output voltage:12V ,DC 300MA-1000MA 2)Various sizes are available :4", 5", 6", 8" 3)CE,GS,UL certified adaptor 4)Safe and reliable Inner packing:1 unit/polyfoam/color box Out packing:6units/ctn Place your fingers on the ball surface and sparkly beams follow your fingertips wherever it goes,and respond to your touch or dance to your music with it's sound response