Feeders, even if you are away from home your fish will still have food regularly. You can individually adjust the feed according to the fish’s needs. Yellow color Two-level power supply: 12h / hour 24h / hour Power mode: AA battery * 2 (will be sent) Large capacity upgrade: suitable for a variety of power supplies to meet different needs One-button manual feed: press the button to automatically feed once, without affecting the preset timing setting Control the amount of fish food: adjust the size of the food by adjusting the positive adjustment knob of the feed box, 6 levels of adjustment