1) item:police whistle LS2957 2) size:69*14mm 3) material:iron 4) nickel plating which is non-toxic and hazard-free item: police whistle LS2957size: 69*14mmmaterial: ironplating: nickel or goldlogo: engrave or laseraccessories: lanyard or metal chain can be attached on itfunction: policemen, army, etc police whistle LS2957