Usage Tips:ACCURATE FOOD Amount - Compared with ordinary fish feeders with only one compartment, the updated automatic fish feeder contains a total of 16 compartments, capable of providing 15 individual servings, convenient for storing various foods. Each grid holds up to 2 grams, ensuring high food accuracy. NOTE: Please do not store fish food in the outlet compartment. 2 Installation methods - The aquarium feeder provides two different installation methods to suit different types of aquariums. You can mount it to your tank with the adjustable clamp base, or use the suction cup to stick it to the tank cover. Both methods are easy to do, so you can choose whichever method suits your needs. Moisture-Proof Design - Unlike other automatic fish feeders with only one opening, which is always open, which can easily make food wet or clogged, the automatic food dispenser is completely sealed against moisture, and its opening will automatically close after each feeding. This thoughtful design effectively keeps the fish food dry. Holds most types of food such as pellets, pellets, powder and strips. NOTE: Not suitable for shrimp and flakes. CUSTOM FEEDING TIMES - With the smart LCD display and timer function, our automatic fish feeder can be set up to 3 feedings per day, with up to 3 bars per feeding. You can also set it to eat at any time of the day and have it delivered every other day or two or three or four. If you want to experience the fun of feeding, you can also choose manual feeding. USB Rechargeable - The rechargeable timing feeder has a 700mAh built-in battery that can be fully charged in 3 hours and lasts for 1 to 2 months. (Type C charging cable included). No need to buy batteries repeatedly, saving energy and cost.