Size: 7.7x 12x15cm (LxWxH); Holds 250g of seeds. Installation: This feeder can be placed outside the cage, or hung inside the cage. No assembly, convenient and quick. Advantage: The lid can be opened and the power supply is convenient; collect the pods in the small box at the bottom to make the room clean. Save waste: This unique automatic feeder can help save any waste as you will be able to save money on the seeds that didn't end up getting dirty on the floor or outside the cage. Enjoy the food: The built-in automatic bird feeder can provide what your pet likes, such as all kinds of cereals and nutrients. But the big seeds can't be put inside, they will feed stuck under the box. The feeder can store seeds for about 7-15 days, which depends on different birds.