Automatic Fish Feeder: This automatic fish feeder feeds your fish with a simple adjustment. No more worrying about food during your vacation or business trip. You can set the quantity and feeding schedule, and choose between automatic and manual modes. Technical Specifications Power Supply: 2 AA batteries (not included) Feeding Frequency: Up to 2 times per day Manual Mode Available Compatibility and Accessories Dry Food Only Compatible with Pellets, Flakes, and Fish Fillets Mounting Two Fixing Methods: Attach the feeder to the aquarium wall by screwing it in. Usage: Adjust the quantity using the slider. Place the feeder above the aquarium to protect the food from moisture. Make sure the lid is securely in place and that there is a hole for easy access. Additional Information Easy Cleaning: Simply remove the dispenser, rinse it with warm water, and make sure it is completely dry before adding food.