The Custom Imprinted Whistle Light with Compass offers so many tools in one. The hearty metal whistle light features a single white LED light, a metal whistle, and a built-in compass, all attachable to your customers” key chains via the included metal split key ring. It is easily turned on and off with its push button. Everyone will want to keep this useful item on them at all times, ensuring that your organization”s name will receive a ton of exposure. Button cell batteries are included.