4 different modes:1. quick flash,2.slow flash,3.neon-rotation mode,4.light off Powered by: button cell batteries (included) , light up shoelaces last for about 60 hours,when the batteries run down,you can replace new. Suitable for sneakers, casual shoes, sports shoes, running shoes, boots and skates etc Perfect for parties, night activities,Hip-hop dancing,skating,running,cycling,cosplay, safety warnings,Disco etc. The nylon led shoelaces is very easy to tie and used for adults kids boys girls