1.Programmable: The AquaBlue's timer allows you to set up to four automatic feedings per day. You can program it to feed at any hour of the day or night and have it deliver either a single or double or triple feeding. At the same time, you can also feed manually and experience the fun of feeding.2.Two Different Fixed Methods: The feeder has 2 install methods for you to choose. One is to fix the feeder to the tank wall by using the holder. Another is to paste the feeder with double side sticker on the tank cover.3.Moisture Prevents Designmoisture resistant hopper keeps fish food dry, won't get wet or jammed.It accommodates most types of food, including flakes, pellets or crumbles.4.Easily Add Food: Adding the fish food at the top of the fish feeder, not to take down the food bucket, so you can increase or decrease easily the amount of dispensed food. Because of the 360 rotation of the pedestal of digital fish feeder, you can rotate it to the satisfying position after it is installed.5.Large Food Capacity: With a capacity of 200ml, its large size holds enough food to keep your fish fat while you're away. Hatch style feed door is completely adjustable, allowing you to decide how much food is dispensed at each meal.