Fish food feeder can help you feed your beloved fish in aquarium when you are working, shopping, or travelling outside. The feeding food and time are adjustable By the (Max, Min) slider, you can increase or decrease the amount of food dispensed per rotation. Can operate both automatically and manually. Feature - Color: As shown - Material: plastic - Size: 12.5 x 10.5 x 8cm - Great for everyday use whether you are Home or Away - Simple operation and installation, manual and automatic - The feeding food and time are adjustable By the (Max, Min) slider, you can increase or decrease the amount of food dispensed per rotation - Moisture-resistant hopper keeps food fresh and accommodates most types of food, including flakes, pellets or crumbles. Note: Battery is not included.