Features:1. LONG WORK TIME: Powered by 2 x AA battery (not included), it can be charged up to 2-4 months.2. LARGE CAPACITY: Comes with 2 food container. The small food box has a capacity of 50g and the large food box has 100g. Suitable for a variety of fish feed such as granules, flakes and powders.3. ADJUSTABLE QUANTIFY: Its feed door is completely adjustable. Every meal is controllable. The silo can be disassembled and washed easily, bringing you more convenience.4. 2 FIXING METHODS - Place the food feeder on aquarium, free-standing or rim-mounted. Suitable for both fish tank without cover and with cover.5. CAN ALSO BE APPLIED TO different pets such as fishes, turtles, newts and frogs. With the enclosed type design, the cap of this feeder can be adjusted automatically to upwards in per turn, so that the food won't get wet or jammed. Notice: The product is only moisture-proof, not waterproof. With built-in electronic circuit, it can not be dropped into the water. Description:Material: plasticBattery: 2 x AA battery (not included)Color/Style: yellow, blue(optional) Packing list1 x Automatic Fish Feeder, 2 x Food Container(battery not included) Note: 1. Please allow a little error due to manual measurement. Please make sure you don't mind before bidding 2. The color may vary depending on the display. Please understand Note: Hello, please pay attention to your shipping address when purchasing products. If your receiving information (such as name, street, house number, doorbell/email without name) is incorrect, the order will not be delivered correctly.)