The WA-1 attaches to the bottom of the front foot of ALEXA, ALEXA Plus, ALEXA Plus 4:3, ALEXA M body, ALEXA XT, ALEXA XT M body or ALEXA XT Plus. With the WA-1 attached, the camera can be attached to ARRI, SONY or Panasonic video-style quick release plates. Not compatible with ALEXA Studio or ALEXA XT Studio.