Fox 40 Sonik Blast CMG Whistle Color: white Sound Power: 120 dB Design: 3-chamber pealess + CMG ✷ breakaway lanyard ✷ Advanced science and technology makes the Sonik BLAST the most efficient whistle in its class. Flawless patented pealess whistle emits sound power of +120dB. Extremely easy to blow, cannot be overblown. Superior clear loud blast carries over long distances. 4 sound-producing resonators built into 2 chambers. Includes cushioned mouth grip and lanyard.