The Sony CAWR855 Case is a wireless receiver
case to hold the WRR-855A wireless receiver. It attaches directly to the
DSR-300L/DSR-500WS via a V-shoe attachment and a direct audio/power connection
interface. A lithium-ion battery can also be attached directly to the rear panel
of the CA-WR855 via the V-shoe attachment. This allows easy battery replacement
even when the WRR-855 is mounted.