Atmosphere is approved for cold water and features a unique highly effective de-fogging system which keeps the field of vision clear even at water temperatures close or equal to freezing point. The anti-distortion visor, with frosted sides prevents reflections and thanks to the over pressure technique the risk of contaminated water entering the mask is reduced. Any standard communication system will fit the Poseidon Atmosphere. Combine with the Xstream first stage for optimized performance. External buoyancy compensation weights are available add-ons which also could be used for mounting torches, video-cameras etc. Weight (g): 1294 EAN: 7340193705003 KEY PERFORMANCE FEATURES Highly effective de-fogging system Anti-distortion visor Prepared for communication system Over pressure technique Can be used in all altitudes without free-flowing Air Yes Anti-Freeze protection n/a Approved to depth (m/f) 50/165 Automatic Inhalation Control Yes Automatic Venturi Assist Yes CE Cold water approved +4C Yes EN250:2014 approved Yes EN738-1 Oxygen approved No IP (bar/psi) 8,5/123 Nitrox EAN 40% Yes NORSOK Tested No O-rings EPDM Oxygen 99,95 % No Trimix n/a US Navy Tested No Working pressure 300 bar