NEPTUNE II NIRA is the integration of the second stage (NIRA) and a full face mask (Neptune II). NIRA (Neptune Integrated Regulator Adapter) is an adjustable second stage, properly designed for the NEPTUNE II features. With the use of the NIRA you can get the best performance from the Neptune II. The NIRA has a double position deflector to eliminate accidental flows, caused by impacts on the surface. The inhaling effort is adjustable to different operating conditions and depths. The second stage NIRA is particularly made to be use at low temperatures, where the normal regulators usually freeze. The purge-button is oval and big for easy access. A special block protects the front cover from accidentally unscrewing. Neptune II NIRA has obtained the CE Certification in accordance with 89/689/EEC directives under the UNI EN250 standard rules for underwater activities even at low temperature (<50 F°). Neptune II NIRA is also available with a first stage. NEPTUNE II NIRA TR94 POLAR, a balanced membrane first stage, weighing 1320 grams, chromium-plated brass and steel made, with 2 HP entrances, 4 LP ones, rotating tower and "antifreeze" kit, designed for low temperature dives, up to -63°C. The NEPTUNE II NIRA TR94 POLAR comes standard with the Polartex strap. NEPTUNE II NIRA 6600, a balanced piston first stage, weighing 921 grams, chromium-plated brass and steel made, with 2 HP entrances, 4 LP ones and rotating tower. This item is not available in the European Community.