Features: 1. Large Capacity : 50g/100g Capacity, suitable for a variety of fish feed such as granules, flakes and powders. 2. Long Work time: powered by two AA batteries (not Included),can last for few monthes. 3. Customized Feeding Time/Circles Schedule -- There are 4 feeding time period setting and 3 levels portion control for each time by choose the rotating circles of the feeder round bucket. 4. Auto Setting Button --it will automatically set the feeding time of each 8 hours or 12 hours(according to the model) to rotate once to feed the fish. 5. Instant Feeding Button -- Instant feeding can be done by just pressing the “Manual” button, feed your fish at any time with one press button. 6. Two Fixing Methods -- Fix it on the tank glass wall by 360° adjustable clamp base or fix it on the flat surface of tank by using double-side sticker. Specifications: 1. Material: plastic 2. Power supply: AA Batteries*2(not Included)