Features: Milled green and purple anodized titanium. Lanyard hole at the bottom. Description: This A-05 Whistle from WE Knife Co. is made to be an emergency whistle. Made with high-quality materials, it is built to last. Weighing just a fraction of an ounce, its perfect for any outdoor and survival kit. It's designed for easy carry on a key ring, neck cord, or lanyard. Looking for more whistles? Check out our selection!