The battery box comes with a timer button just press once to activate the automatic cycle As night falls, these eerie glowing eyes will come alive, making your yard or window display even more haunting They can be applied to, skull, and various props, allowing you to stand out and make a bold statement in any crowd or gathering Weatherproof design ensures they keep glowing bright even in harsh conditions, like the unblinking eyes of a restless spirit watching from the shadows Halloween glowing eyes lights are a nice addition to your Halloween ornaments