With this automatic fish feeder feature, you no longer need a neighbor to feed the fish or turtles when you need to go out. It works by serving food every few hours using a timer and can hold a stock of about 21 days, meaning you can go on vacation believing your fish are getting the right food. The moisture-proof hopper keeps food fresh and can hold most types of food, including flakes, granules or crumbs. If you don't want to be lazy, just press the manual function and Kinoee will automatically feed once with the push of a button. Installation method: Depending on the shape of the aquarium, the dispenser can be installed in two ways. 1. Place the edge of the bracket in the aquarium and tighten the plastic screws. 2. The sides of the Velcro are separated, tear off the back of the label and stick them to the bottom of the food box in the lid position. Power: You can use two AA batteries (not included) for easy battery replacement. Easy feeding every day: The timer allows you to set up to four automatic feedings per day. You can program it to feed at any time of the day, and do it one, two or three times. At the same time, you can also feed manually and feel the joy of feeding. Notice: Do not twist the food box by hand. Package includes: 1 x automatic fish feeder 1 x positioning device 1 x double-sided sticker 1 x instruction manual