SL-108 ring light fibre They also sell another housing

They also sell another housing that goes much deeper that is far more suited to diving

Three versions of this viewfinder are available to provide adequate control clearance

This filter is intended to capture glowing critters with an underwater Fluorescence video light

M52 Air Lens NOT Compatible With No-Burp O-rings

UPDATE KIT SONY A7R V

SL-108 ring light fibre They also sell another housingThis light screws onto a 67 thread of a port or an appropriate stepping ring if the housing's port does not have a native 67mm thread. It can also attach to an arm system with the supplied 1" ball mount. It can operate as a video light or strobe. Sea & Sea style fibre optic cables are included to use it as a strobe than can connect to many housings.