Uniclife Automatic Feeder Aquarium Food Feeder 4 Times With Cramp Great for everyday use whether you are home or away Set it and let if feed your fish maximum of 4 feedings per day. Easy to set up and use and includes easy start guide It fits on most aquariums and includes a universal installation clamp and suction to make set-up easier for you. 2 AA batteries not included. Ideal for most types of food. Package included: 1* Automatic Feeder, 1* Velcro, 1*Screw Clamp