Easy to Hear - 3 super loud survival whistles can provide up to 120 decibels of sound guaranteed, can be heard from afar, and play their part in an emergency. Not just a whistle : 3 in 1 multifunction, besides an emergency whistle, it is also a compass and a thermometer, bringing you the necessary information during outdoor sports. Sturdy and durable: made made of sturdy, waterproof and durable ABS, easy to clean. Unlike metal whistles, it can be easily hit in very low or high temperature. Compact and very portable: less than 17g, does not bring weight to your outdoor sports, with a lanyard neck strap easy to put on in all situations, it can also be attached to your backpack, belt, etc. Multi-purpose: powerful safety whistle for hiking, biking, hiking, skiing, all kinds of outdoor activities, and also can be used for coaches, instructors, sports, teachers, rescue guards, protection, self-defense. product About us We are a team of outdoor sports enthusiasts. This emergency whistle is one of the best we have used during outdoor sports, so we recommend it to outdoor sports enthusiasts like us. Have this product, but we hope that you will never need to use it. Features: [Small and lightweight] - In size of 2 x 2.8 x 2 cm, only 453.6g. Survival whistle with a lanyard, easy and free to take when doing your outdoor sports. Multi-function: 3 pieces per pack, and there are compass and thermometer on both sides for each of between them, share them with your friends. [Durable materials] - Made of sturdy ABS, easy to clean and durable. Unlike metal whistles, it can be easily hit in very low or high temperatures. Prepare it before outdoor sports: it is better to prepare two emergency whistles at least before sports outdoors, one in your backpack, and one always available, in case of an emergency. [A good gift] - A good gift for friends who are outdoor sports enthusiasts air. Loud safety whistle for hiking, biking, skiing, all kinds of outdoor activities, and can also be used for coaches, instructors, sports, teachers, rescue guards, protection , self-defense. Lifetime Warranty We offer lifetime warranty on our products. You will have a full refund or return at your convenience within the warranty periods. Contents: 3 survival whistles. Do not hesitate, add to cart now.