i have 2 of these lockets this is 1 of 3 lockets without the amplifying device made for the "jigsaw" - "jill" locket scene that was never filmed, but the scene was in an earlier version of the saw 4 script. this can be seen on the saw 4 special features (the props of saw 4). this "jill" locket does not contain the amplifying device. the saw 4 props team positioned this locket to be used in the planning stages of this scene. only 3 "jill" lockets without the amplifying device were positioned by the saw 4 props team to be used in the planning stages of this scene. the locket and chain are metal and measure 26". with twisted pictures COA. This item has been sold and is no longer part of my collection.