The Nauticam N85 Extension Ring 20 can be used to add 20mm effective length to an N85 Port System.

See Port Chart for more details on choosing the correct extension and port.

Technical Specifications

Depth Rating    100m
Port System    N85
Weight    
Port Opening Diameter    
Port Diameter    
Body Material    Anodized Aluminum Alloy
Port Material    
Port Coating    
Port Shade Material    
Removable Port Shade    
Spare O-ring    90143