UST Find-Me Signal Mirror & Hear-Me Floating Whistle Combo Ultralight signal mirror and emergency whistle for camping, backpacking, and emergency preparedness Includes float and lanyard to keep mirror and whistle from sinking if dropped in water Virtually unbreakable acrylic mirror; whistle with pea-less design emits a shrieking, high-pitched sound Backed by a two-year manufacturer's limited warranty