Fox 40 Mini Whistle with Breakaway Lanyard The Fox 40 Mini Whistle with Breakaway Lanyard is a compact version of the Classic Pea-Less Whistle with a smaller mouthpiece. The Mini also has the 3-chamber pea-less design, with 109dB, emitting a reliable, flawless, consistent and penetrating sound; the exceptional clear sound can be heard over man-made and environmental noises. It"s extremely safe, works wet or dry, very functional and may just safe your life or that of your loved ones. The Fox 40 Mini Whistle with Breakaway Lanyard s chambers are designed to self-clear themselves if the whistle were to be submerged in water. It also comes with the non-corrosive stainless steel split ring and breakaway lanyard which releases with tension. The lanyards is 3 in. in length by 3/16 in. The name says Mini, but there is nothing mini about the blast of this whistle"s performance.