Sinyiin Split-Level Dome Port for Action5/4/3 — 30M Waterproof Case with Floating Grip & 1/4in Mount

Designed for Action5/4/3 cameras, this Sinyiin Dome Port lets you shoot dramatic half-above/half-below water photos by shifting the waterline away from the lens while keeping 30M waterproof protection. The semihemispherical optical glass dome reduces distortion and maintains wide-angle clarity in underwater shots. Built-in antifog inserts and compatibility with quick-release magnetic systems improve reliability in changing conditions. The unit includes a floating handle grip with a 1/4in screw mount for accessories, long screws rated for pressure resistance, and full disassembly capability for servicing. Constructed from corrosion-resistant ABS/metal, it’s ideal for divers, snorkelers and adventure photographers capturing surf action, coral reef exploration, or underwater documentaries.