The NA-R200 housing is for Nikon wireless speedlight SB-R200, which is compatible with the Nikon Creative Lighting System.
In spite of its compact size, the speedlight utilizes Nikon i-TTL technology, which allows exposure compensation of individual speedlight output. In i-TTL mode, each speedlight emits its own monitor pre-flash, and the actual flash output level is adjusted by the camera from measuring the flash illumination that is reflected back from the subject, result in a lighting system far more accurate and flexible than conventional solutions.
The build-in pop up flash of the Nikon CLS- compatible camera can be used as a commander to send out i-TTL commands to two speedlight via the 2 optical bulkheads on Nauticam housings.
The housing is machined from high grade aluminum alloy through precision CNC machining and treated with corrosion resistant coating. The housing is sealed via two latches and there are buttons to access on/off and target light function. Optical fiber connector locates in the backside of the rear housing