Two ration-adjustable boxes: This automatic fish feeder has two sizes of fish food dispenser boxes (50g and 100g). You can adjust the feed ration each time using the adjustment switch on the fish feed dispenser box. Two automatic feeding modes: This automatic fish feeder has two timer setting modes, 12 hours and 24 hours. There is also a manual feeding option. Pressing manual feeding does not change the automatic feeding mode. There is no need to worry about overfeeding, as the feed rotates once every time. Convenient to use: The automatic fish feeder can feed food even when the customer is absent, so it is safe for travel and business trips, so it is very easy to install and can be easily installed in a water tank with a dedicated unit or fixed It can be installed with a sticker. (The power supply must use two 1.5V AA batteries. Not included) Feed Type: Feed all types of fish, including flakes, pellets, powder and strips. Ideal for home aquariums and aquariums. You can feed most pet fish, turtles, newts and frogs.