What you Get: 4* gorgeous gold metal whistle, 4* durable lanyard, 24-hour friendly customer service and lifetime warranty. Multiple Purpose: Emergency survival whistle works well for outdoor hiking/camping/storming etc; and also a perfect assistant for coaches/referees/dog training; 4 Pack- It's also a small gift for your families and friends. Metal Whistle: Thanks to the premium aluminium alloy, our survival whistle provides such advantages as light but durable, rustproof and waterproof compare to typical plastic ones. Lightweight and Portable: The safety whistle with lanyard weighs only 12g, small enough to stash in your pocket, purse or hang around your neck softly with the included lanyard. Fantastically Loud: With unique double tubes design, our emergency whistle is super loud with very little effort and travels a long distance to catch attention in an emergency. (PS: SOS - three short, three long and three short; "Help Me!" - three short blasts).