It is 20 cm long and 8 above; I put on my Sony 77 (first version, but is it important?) and as this camera has no standard connections (normalized) must install a door and this height 10 cm, ( the width is similar to others) so you will have a powerful microphone, but awesome!
Question record is not much better than the original, but records the sounds that are in front and sides instead of one lobe 360. The isolate is very well why it is there, no noise as the focal length changes or development. I looked for a regret, a defect, I'm still looking.
I do not regret my choice.