Unlike many "lighted bobbers" with tangle-prone appendages for slip-bobbering, Feature a through-the-center slider hole-the real slip-float principle. This versatile float works day and night. Simply pop the cap, push on the battery top, and you've got bright light. No more need to dismantle rigging or to change rods at sundown. The Thill Nite Brite Lighted Float, with its unique E. L. battery/light, gives off a glow 20 times brighter and twice as long-lasting as most other lighted bobbers. Choose from red, green, and yellow light options-great for signalling which float is down.