... garbage bags- New space-saving lid mechanism- Removable top cover for easy cleaning- Comes with Garbage Bag Retainer ... indicator twinkle in red every 3 seconds, when cover is open, indicator is red continue.- When dustbin ... full, just press "open"button at the top of cover, the cover open up ,it will not close, ... about 20cm, keep 0.5 second, the cover open up automatically.It is obviously a necessity ...