product 1.Two types power supply: charged by USB or batteries, no need to buy batteries repeatedly, which is energy saving and environmental protection. 2.Long work time: Powered by a large-capacity lithium battery, it can be charged and discharged up to 800 times. According to the number of feedings set, it can be used for 3-6 months on a single charge. 3.Large capacity: 200ml large-capacity feed bucket, suitable for a variety of fish feed such as granules, flakes and powders. 4.Intelligent design: You can set up to 4 feedings a day, feeding 1-3 times each time. At the same time, you can also feed manually and experience the fun of feeding. 5.Fits for 600L fish tank, the feeder can perfectly feed goldfish and turtles on weekends or holidays.