Features: 1. 4 in 1: camping pipe is a whistles, a compasses or a thermometers 2.Durable materials: made of sturdy ABS, easy to clean and stay for a long time. Unlike metal whistles, they can be touched freely in ultra-low or high temperature. 3. The ultra-loud emergency whistles can deliver up to 130 decibels of sound that can be heard from a distance and in emergency situations and play their role in emergencies. 4. MULTI-PURPOSE - Loud safety whistles for camping, hiking, cycling, skiing, any kind of outdoor activities, and can also be used for trainers, teachers, sports, teachers, lifeguards. 5. A good gift for friends who love outdoor sports. Strong whistles for camping, hiking, cycling, skiing, any kind of outdoor activities, and also can be for coaches, instructors, sports, teachers. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Size: 110x30mm Decibel frequency: 130dB 3700Hz Material: ABS Package List: 1X Emergency Whistles