LED: 3 super bright white LED; Functions: com-and-go flash, constant, stop; Battery:2 x LR03(AAA) not included Item No.: SS-305FLED: 3 super bright white LED; Functions: com-and-go flash, constant, stop; Battery:2 x LR03(AAA) not includedCE, ROHS approved 3 white LED bicycle lights SS-305F