... ,gymnasium,night party,etc.They look white while the battery is turn off,upon be turned on,it ... colours.We sell spare optical module and compact battery pack,the batteries can be replaced with1.2V -1.5V ... - Special washing warning will be printed on the washing label.- Leading time: 30-45days after receiving ... L/C- Sample charges: will be paid by the buyer,we usually send samples by buyer's ...