Evolution Aqua EvoFeed Automatic Fish Feeder is suitable for medium and large ponds. The unit is weatherproof and can be programmed to dispense food into the pond at timed intervals throughout the day. The distance the food is propelled, and the amount of time it is dispensed for, are also adjustable. It can be mounted pond side, and is powered via its own built-in, rechargeable battery. It is ideal for vacation feeding. Not recommended with food sticks, flakes or other shapes of food. The rechargeable lithium battery only needs an overnight charge indoors, to then operate for at least 3 months powered by its own battery, depending of the timer setting. Adapter for charging is included. The feeder will work as normal when adapter is plugged in. Specially designed with a strong motor and bottom ventilation over the impeller to prevent the food from clogging. Fixing pegs are included, which makes it easy to place and secure the feeder at the edge of your pond.