This Fish Mate Automatic Pond Fish Feeder slowly dispenses food over a five-hour period. A large, rotating hopper holds enough food for 21 days. This feeder features an adjustable feed quantity and timing for all fish foods, and is weatherproof. The feeder can be mounted on a pole at the pond's edge, or suspended over the water. Reliable and accurate quartz timer. Battery condition indicator for the AA battery that can provide up to 1 year continuous use.