Made of high quality plastic, eco-friendly, strong and durableOur auto feeder can help you feed your fish in aquarium when you go out for work or travel, convenient to useVery easy to install, you need to fix it in a suitable location with the slot on the aquarium tank, then rotate the screw knob to tighten. make sure the outlet ofIt works with 2 AAA batteries (not included), low power consumption and could be replaced by yourselves, very convenientThe ability to feed food can be adjusted by placing the switch on the food container boxProduct Adding food: The device is adapted to contain and feed the granules. Remove the box for food filling, then adjust the switch until the food has the smallest possible mouth. Fill about 30g of food into the container and fix it on the device again. And then adjust the food mouth as needed. Specifications: Condition: 100% Brand New Material: PlasticColor:Yellow+BlackPower supply: 2 x 1.5V AAA batteries (not included)Size: Approx. 70 x 65 x 105mm / 2.8 x 2.6 x 4.1inWeight: approx.220gPackage Included: 1 x fish feeder (batteries not included)1 x adhesive tape