WORRY-FREE FEEDING - You can go away knowing your fish are being properly fed and cared for. EASY TO INSTALL AND PROGRAM - Easy start guide included, step-by-step installation instructions , can be simply set to feed once or twice a day. CHANGEABLE FEEDING CHAMBER - 2 sizes of feeding chambers are included, one small (80ml) for those with a relatively large aquarium small and ensures the food always stays fresh, and a larger one (200ml) for those with a large stock or if you plan to expand your aquarium in the future, you won’t need to buy another feeder. ADJUSTABLE VOLUME CONTROL - Delivers the right amount of food, ensures your fish are properly fed BATTERY LIFE - powered by two AA batteries (not included ). Color: Yellow Black Quantity delivered: 1 piece