Unlike many lighted, nighttime floats with tangle-prone appendages, the Thill Nite Brite is a true center-slider float that glows brighter, lasts longer and makes fishing in the dark easy and productive. As a true slip-float, however, the Nite Brite also functions as a great float for daytime use, too. Simply unscrew the cap, push on the battery top and replace the cap. The E.L. battery/light gives off a super-bright glow that s easy to see even in waves.