This is the new soft release button from Leica. This is the black model with an "M" etched into the top. The edge has a fine knurled edge and the finish is a matte black. The "M" is large and fills the top. It is made of brass and is 12mm in diameter. Also include is a stud that is threaded so that it will double as a lapel pin. It attaches securely and only time will tell if it stays put. I have always like soft releases, makes it easier to press the shutter.
Leica soft release button.