This automatic fish feeder are battery powered. You can place this feeder on the of the aquarium or fish tank, come with installation tools, easy to use for fixing. Applicable to a variety of fish and turtles, such as goldfish, fish,small fish, tortoise, etc. Features - Color: Black - Material: Plastic - Size: 11.00X10.00X7.50cm/4.32X3.93X2.95in - The material is safe and light, which is wear resistance and practical for the lasting time use. - Automatic fish feeder can help you to take care of your and you never worry about your fish to be hungry. - This fish feeder is compatible with a variety of fish foods, providing versatility for different types of fish. - The feeder will reliably dispense the accurate portion after setting the amount and time. - Automatic fish feeder can not only feed your but also prevent over-feeding. Specification - Battery: 2pcs AA batteries(not included) - Capacity: 65ml - 2-level adjustment: feeding up to 4 times a day, continuous unlimited - Fixed thickness: 2.5cm thick glass fish tank - Feed type: (Suitable for loading flake or granulated food) - Note: Small pellets (1.5) food can be filled with 100g, each feed can be about 5g, you can feed 20 times; Large feed (4.5) can be fed 50 grams, each feed can be fed about 2g, can be fed 25 times. Package list: 1 Feeder