The ACR WW-3 is a compact survival whistle perfect for land or sea use. Designed to locate boaters who have fallen overboard, this accessory can also aid in land rescues as well. Get rescuers attention with a dual-tone shrill that’s up to 100 decibels which is audible even from greater distances away from where you are. A unique flat design prevents the WW-3 from holding water, can be attached to a life jacket, vest, foul weather gear, rafts, keychains and more with its 31.5 inch lanyard and meets USCG requirements. The ACR WW-3 Resq Whistle is a great addition to any adventure you conquer.