1 3/4″ overall. 0.3″ diameter. Titanium pealess design. 100+ decibel level. Extremely lightweight – weighs only 0.1 oz. (2.8 grams). Red reflective weave cord neck lanyard. Hang packaged. NO Vargo products may be sold on Amazon, Ebay or ANY other auction type site. Additionally, retailers are prohibited from displaying the MAP price with a “Strike-Thru” or any other type of alteration.