1.Prum MaterialMade out of Titanium Alloy. The waterproof, anti-corrosion, and non-toxic material enable the whistle more durable and resistant to various complex environments. 2.Multi-Functional Fit for all kinds of tasks, e.g. Kayaking,Hiking,Camping,Boating,Dog Training,,Referee,Football and other outdoor or survival activities. The pea-less design allows the whistle to work in all conditions, delivering an instant sound without being distorted by water, dirt, saliva or ice, etc. 3.Super loudThis little whistle can make a super loud and shrill sound of up to 120 decibels, which can easily attract others attention from a long distance in any emergency situation, making you feel safe and protected. 4.Everyday Carry ChoiceThe sk, compact and lightweight design makes the whistle your perfect EDC partner. It can be attached to a keychain, nel, lanyard, accessories or your bapa anytime and anywhere . 5.GiftThis is the gift for your friends or family.