Features In size of 2in*1.1in*0.8in, only 16oz. Survival whistle with a lanyard, easy and free to take during your outdoor sports.2 pieces per pack, and there is a compass and a thermometer on both whistle side for each one, share them with your friends! Made of sturdy ABS, easy to clean, and stay long. Unlike metal whistles, can be freely touched in ultra low or high temperature. It's better to prepare two emergency whistles at least before outdoor sports, one in your backpack, and one always available, in case of any emergency situation. A good gift to the friends who are outdoor sports lovers. Loud safety whistle for camping, hiking, cycling,skiing, any kind of outdoor activities, and can be also for Coaches, Instructors, Sports, Teachers, Life Guard, Protection, Self Defense. A whistle can save your life if there is an emergency on the water. The reason is it really difficult to scream if you fall in the water. Also, vocal screams are really not very loud. A whistle will be much louder than a scream, so a whistle is a must of you’re out on the water.This one is the tone you are looking for. Great sound, carries a good distance, doesn't hurt your ears when you blow it.Durable and loud. Just the right pitch and warble to command authority. Ball on the inside can get frozen during very cold weather. If this happens to you, try spraying some dry silicone inside to coat the ball. I would expect that this is common to most whistles of this type. EASY TO BE HEARD - 3pcs super loud survival whistles can provide up to 120 decibels sound guaranteed, can be heard from far distances, and play its role in times of emergency. A whistle can save your life if there is an emergency on the water. The reason is it really difficult to scream if you fall in the water. Also, vocal screams are really not very loud. A whistle will be much louder than a scream, so a whistle is a must of you’re out on the water.This one is the tone you are looking for. Great sound, carries a good distance, doesn't hurt your ears when you blow it. Loud safety whistle for camping, hiking, cycling,skiing, any kind of outdoor activities, and can be also for Coaches, Instructors, Sports, Teachers, Life Guard, Protection, Self Defense. You can use your favorite lanyard instead of nylon lanyard. bring no burden to your outdoor sports, with neck lanyard easy to get in any situation, it also can be tied to your backpack, belt and so on.You can tying this to your PFD and that works pretty good. 3 in 1 multi-functions, besides an emergency whistle, it is also a compass and a thermometer, bring you necessary information during outdoor sports.Date First Available: October 24, 2020. Best Sellers Rank: #68,145 in Sports & Outdoors. Customer Reviews: 4.3 out of 5 stars 443 ratings 4.3 out of 5 stars. : B08LQSDTDT. Part Number: ?8678-8679. Manufacturer: ?MeiNvShe. Color: ?GREEN. Brand Name: ?MeiNvShe. Package Weight: ?0.03 Kilograms. Item Package Dimensions L x W x H: ?2.87 x 2.32 x 1.22 inches.