... , PCS/CTN Colour: silver,blue,green,red, - With magic effect for home,club,shop window,dining-room,ball-room,coffee shop ... ,gymnasium,night party,etc.They look white while the battery is turn off,upon be turned on,it becomes any ... of above colours.We sell spare optical module and compact battery pack,the batteries can be replaced with1.2V -1.5V- Special ...