Built from durable, corrosion-resistant aluminum, this compact housing features mechanical controls for nearly all camera functions, fiber-optic and sync cord strobe connectors, and a built-in vacuum pump leak alarm for added safety. Ergonomic grips with SA8 ball mounts make it easy to attach strobes and accessories, while smart yellow accents highlight key controls. It supports TTL with the optional Optical YS Converter S1 (Sony adapter required) and accepts a range of interchangeable ports and viewfinders (sold separately). Perfect for serious underwater shooters who demand reliability and performance.