Delivering compact performance and big-time operation, the Rapala Floating Aerator provides anglers with a portable means of keeping their catch or their bait as healthy as possible. Built with an air release stone at the bottom, the Rapala Floating Aerator gently mixes air into the water as it floats along the surface.Powered by 3 “C” batteries, the Rapala Floating Aerator is water/switch activated and delivers 18-hours of continuous run time or 36 hours of run time on 15-minute intervals. Made to aerate 1.5L (0.4Gal) of water per minute, the Rapala Floating Aerator provides a convenient and functional means of keeping fish happy and healthy.