Features: Automatic Timing Feeder: Our fish feeder can be operated automatically or manually, making fish-keeping easier. It is great to feed your fish at a scheduled time (once to four times per day), or immediately initiate a feeding by pressing the button. Large Capacity: 200ml food box can last for several days. This auto fish feeder is great for daily use whether you are at home or away. No more worry about fish feeding even you are on a business trip. Using 2 AA batteries, it can last 3-6 months. Wide Application: Suitable for most types of fish food, such as dry, loose flake and particle feed, flakes, pellets, powders and small strips. Suitable for closed aquariums and open aquariums with feeding mouths. Not only for goldfish, it also can be used to feed most of pet fishes, turtles, newts and frogs. Easy To Use: The unique structure of the feed opening on the top to prevent food from being moisturized or clogged in dispenser, as well as it is convenient to add feed without removing the feeding bin. You can easily control the amount of fish food dispensed by adjusting the slider. Floating Design: The feeding circle adopts floating design so the position can be adjusted. The base can be rotated after the feeder is fixed. Come with one round feeding circle. Specifications: Main Color: Black+Green Type: Automatic Feeder with Square Feeding Circle, Automatic Feeder with Round Feeding Circle (Optional) Battery: 2 * AA battery (not included) Food container capacity: 200ml Material: ABS Plastic Package Size: 16.8 x 12.2 x 8.9 cm Package Weight: 300g Package List: 1 * Fish Tank Automatic Feeder