I am selling my NEW Nauticam-36163 for 270€ - N85 Macro port 65 The port is made of saltwater-resistant aluminum, the port disc is made of mineral glass. The macro port 65 also has an M67mm thread at the front to attach further macro lenses to the port. Diving depth: 100m Port connection: N85 Scope of delivery: Nauticam Macro Port 65 Protective cap for the port disc