Blue Fox Firefly Float Replacement Battery  Red Glowing  1 Per Pack (Size- 1.5) Firefly Float design features the option of using up to 4 battery lights at once. Variable design allows rigging either as a fixed float for panfish and other shallow water species or as a slip float for night fishing walleyes in the deep. its variable design also allows other shallow water species or as a slip float for night fishing walleyes in the deep. Brightest lighted bobber on the water.