Fox 40 Micro Pealess Safety Whistle. Compact, ergonomic design. Orange casing with lanyard. Recommended by outdoor enthusiasts, adventure guides, hikers and cyclists. Relied upon by NATO Forces, U.S. Army, S.O.L.A.S., American Red Cross, and U.S. and Canadian Coast Guard. Sound power: 110 dB. Easily attaches to life jackets, clothing or backpacks. Hang packaged. Sound power: 110 dB. Easily attaches to life jackets, clothing or backpacks. Easy to blow and cannot be overblown. Can be heard above ambient noise, crowds, and even gale-force winds. Chambers self-clear when submerged. Color: Orange.