Product description: Color: Black. Housing: plastic. Battery type: 2 x AA alkaline batteries (not included). Dimensions (approx.): 110 x 100 x 75 mm. Package includes: 1 x automatic feed dispenser for aquariums. 1 x instruction manual Description: Automatic Fish Feeding - This product can automatically feed the fish. Don't worry about feeding on vacation or in business. You can set the time for manual or automatic feeding. Adjust the slider to set the amount of food. Flexible and practical. Food styles to choose from: The product can only be used for dry food. Ideal for feeding pearls, granite, strips and flower fish. Place this item over the vest to prevent the food from getting wet. Easy to Install: Two ways to attach the feed dispenser to the vest. One way is to tighten the pivot screw on the fuel tank wall. The other form is a double-sided adhesive label for attaching the feeding station to the aquarium lid. Choose the right focus for your needs. Battery: powered by 2 AAA batteries (not included). There are no LED displays. Make sure the power supply is on when you leave the house.