Greys led nite float this quality greys led nite float has a metal reinforced eyelet to prevent potential breakages attached to your main line via a snap link swivel it can be used as a standard marker float in daylight conditions but during low light or night time situations simply unscrew the top to operate the internal bright red led indicator switchthe greys led nite float comes fitted with a cr2450 lithium battery and also includes a spare giving you up to 400 hours of battery life