Easy to Set: You can set 8/12/24 hours for power. After pressing the corresponding button, the fish food will feed every 8/12/24 hours. Meanwhile, you can also feed manually at any time. Battery or Plug in: Operated with two AA batteries or use plug in cable. Don't worry about the lack of electricity if you go out. Two modes can be used at the same time. We recommend dual modes for long-term travel. Special Funnel Bracket: For the tank without cover, use the bracket to install the feeder on the edge of the fish tank. For tank with lid, use the special funnel support to clip onto the lid. The holder is equipped with funnels that will not splash fish food. Moisture-proof container: A large capacity 200ml food container is included. Gives you peace of mind when you go on vacation for 15-30 days. The container is almost sealed can prevent the food from being damp. When it is time to clean the container, remove it and rinse it with water. Adjustable Outlet: The opening of the container housing can be set by the sliders and controls the amount of feed exactly every time. It is suitable for most types of foods such as flakes, chips, pellets, crumbs, etc.