Battery powered convenience: This auto fish feeder runs on 2 AA batteries, so you don't need a constant power supply. Ideal for vacations or days away, it keeps your fish fed. The clear reservoir lets you see food levels at a glance and refill when needed. Two installation options: Mount the feeder on a tank cover up to 1 inch thick with the adjustable clamp base. For a different setup, use the specially designed doublesided sticker to attach the feeder to the tank cover. Durable and reliable: Made from moistureresistant, foodgrade ABS plastic, it withstands humid aquarium and pond environments for dependable feeding. Programmable feeding: Supports up to 3 automatic feedings per day. You can choose a single 24hour feed, two feedings (every 12 hours), or three feedings (every 8 hours) to match your fish's needs. Practical use scenarios: for vacation travel or weekend trips, for busy days when you can't feed manually, or to establish a precise feeding routine in your aquarium without daily intervention.