Highly Practical】This feeder can operate for 3-6 months with only 2 AA batteries. Safer than traditional plug power supplies. 200ml bait case is Compatible with flake, powder or strip type bait. Can be used in aquariums and aquariums to satisfy a variety of fish in the fish. Size: about 15*11cm_x000D_【Automatic Feeder 】This fish automatic feeder has digital system control, time setting function, monitor display, no wiring requiRed. Note: Please do not use rechargeable batteries. You can set 4 different feeding levels throughout the day, and each stage can fill 1 to 3 feeds_x000D_Adjustable Dispensing: Use the adjustable switch on the feeder case to adjust the amount of bait distributed per rotation. The feeding volume can be adjusted according to the actual number of fish and pets, so you can automatically feed it even when you are away from the house, so you can rest assuRed that it is safe when you are traveling or business trips, so you can keep feeding your precious fish or pets