Super loud: The double barreled whistle is very loud and easy to blow. Sound can provide up to 120 decibels of sound, enough to be heard over long distances. Durable plastic whistle and nylon neck lanyard Widely used:Emergency Survival Whistle is suitable for camping, hiking, cycling, skiing, any kind of outdoor activities, and can be also for Coaches, Instructors, Sports, Teachers etc. The set includes four nylon lanyards,with neck lanyard easy to get in any situation, it also can be tied to your backpack, belt and so on,bring no burden to your outdoor sports. 3 in 1 whistle: a convenient and practical tool for your friends and family. You can use yourfavorite lanyard instead of nylon lanyard. bring no burden to your outdoorsports, with neck lanyard easy to get in any situation, it also can be tied toyour backpack, belt and so on. Colour:Blue Material:Metal Package Contents: 4 x Whistles with Hanging Rope Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.