Features: High Decibels Pronunciation: This stainless steel whistle has double tube design. The oblique and rounded whistle can improve the efficiency of the whistle. The volume are 80-150 decibels, and loud sound can be heard from long distance. Quality Material: This metal whistle be made of food grade 304 stainless steel material, which can be directly contained in the mouth and are safe and environmentally friendly, and its not easy to rust. With Keyring: This high decibels whistle also comes with keyring. You can attach it to one lanyard or key to carry it with you. The appearance are also very fashion and individual and combines beauty and function. Stable Rivet Process: The rivet on the whistle not only looks beautiful, but also makes the pipe overall more stable and strong, so it has one longer service life and one higher cost performances. Widely Applications: The whistle are suitable for survival and emergency situations such as camping, hiking, boating, hunting, fishing and outdoor activities. It can also be used for trainers, referees, and sports. Specifications: Material: Stainless Steel Color: Steel Color/Black Package Weight: approx.27g Size: approx.5.7x1.8cm/2.24x0.71in Package Includes: 1Pc x Survival Whistle note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Thanks!