Ikelite 200DLM Underwater Housing for Canon EOS R7 #69746FBR

A port (not included) is also required for underwater use, depending on the lens to be used. Here's the list of compatible lenses/ports

This is a full featured and durable waterproof housing for Canon EOS R7 mirrorless digital cameras. Suitable for scuba, snorkel, surf, pool, and any application in or around the water. Our custom ABS-PC blend is lighter than aluminum yet strong enough for almost anything you want to throw at it.

TTL Automatic Flash

An integrated fiber optic TTL transmitter communicates the camera's flash signals to compatible Ikelite fiber optic strobes for seamless flash integration and accurate exposure on every shot. Flash exposure compensation can be added or subtracted effortlessly in-camera. Use legacy Ikelite DS strobes with full fiber optic TTL functionality by adding an RC2 Fiber Optic Receiver to each strobe (not required for newer Ecko Fiber and RC-series strobes). Non-Ikelite fiber optic strobes can be used in manual exposure modes only. 

Specifications:

Controls: Controls are provided for everything except Diopter Adjustment Slider, Multi-Controller (can be pressed straight in), Depth-of-Field Preview Button, Focus Mode Switch

Strobe Connector: Fiber Optic Ports

Port Mount: DLM (Dry Lock Micro)

Accessory Port: 1/2-20 Thread

Depth Rating: 200 feet (60 meters)

Weight: 3 lb (1361 gr.)

Dimensions: 7.5 x 5.9 x 6 in (191 x 150 x 152 mm)

In the box:
Housing
Rear O-Ring # 0110 (installed)
Front O-Ring # 0132.36 (installed)
Waterproof bulkhead cap # 9104.7 (installed)
Silicone lubricant 1cc tube