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● The situation of the side breathing tube and the fact that it is not required to close or open valves for its operation, guarantees a large flow of supply, unthinkable in other similar models, especially in case of fatigue or stress. The evacuation of stale air, likewise, is produced by a second channeling integrated into the tube, with a powerful "chimney" effect that prevents the accumulation of a percentage of this air in the breathing zone. The air circulation in Duke is clearly superior to those of any other mask in the similar market. We had the opportunity to test it in the laboratory of the Engineering Department of the Polytechnic of Milan, where the results exceeded our expectations.
● The breathing system does not use the old breathing system through a central tube system, it does not require the need for forced breathing to travel a longer distance and open more than one valve. The double section of the tube causes one to be connected to the breathing chamber and the other to the vision chamber. This advantage is reinforced by the fact that neither the breathing chamber nor the tube have valves to prevent the user from breathing.
● This design, attached to the baffle that directs a small inlet air stream into the interior of the viewing area, ensures the absence of exhaled air in the viewing chamber, drastically reducing fogging while maximizing air extraction hot produced by the face when the mask is worn, and is designed to function as a chimney effect that forces the circulation of air away from the lens.
● The design of the vision zone allows 30% more angle than most similar masks without distortion.
● The tube has a dry upper valve system by buoy that prevents the entry of water due to swell or full introduction of the head under water.
● The tightness of DUKE is guaranteed by three large safety valves, which only act in the event of water entering the vision zone (2) and the breathing zone (1).
● The transparent or black silicone facial according to the version has been studied, following the Cressi tradition, for a fantastic adaptation to all types of physiognomy with only two sizes: S / M and M / L.
● Colors: Transparent-transparent, Transparent-Anchor, Transparent-blue, Transparent-Pink, Transparent-Black, Transparent-red, Transparent-lime, Dark-blue, Dark-black, Dark-red
● Sizes: S-M, M-L
IMPORTANT: Mask for observing the bottom from the surface. It is not possible to compensate the ears by means of the Valsalva maneuver (pinched nose) or the tackle by the exhalation through the nose, so it should not be used in immersion below 1.5 m depth.
