Fenix high-powered lifesaving whistle. If you can be heard, you can be saved. The Fenix whistle is designed to give you the best chance for survival in a disaster or lift-threatening situation. With the unique sounding chamber, you will save 30% of the effort than an ordinary whistle. No movable parts, pealess design, and max sound intensity to 120 decibels. The Fenix lift-saving whistle is an essential piece of safety equipment to have on you during outdoor activities.Features:- The NW20 has a dual-power design- Pore structure and pealess design- Made of food-grade stainless steel- Guaranteed performance in tough conditions- Size: 57 x 18 x 9.3 mm- Net Weight: 21 grams- Material: 304/304L stainless steel, AL6063