The first inhalation under water is the start of a new adventure. The revolutionary combination of Venturi effect and inhalation effort adjustment is natural and intuitive. Aqualung's Master Breathing System allows divers to control both in one simple rotation. All depths, all conditions, all dives - MBS will adapt.

First Stage

• Type of first stage  Overbalanced diaphragm design
• Auto-Closure Device (ACD)  Yes
• Number of HP ports  2
• Number of MP ports  4
• 1st Stage Flow Rate  1500 l/min
• 1st Stage Weight in DIN 747 g
• 1st Stage Weight in Yoke  957 g
• Environmental Dry Kit  Permanent
• First stage exterior  Chrome over marine brass
• Type of second stage  Pneumatically balanced
• Controls  Venturi switch combine breathing resistance
• Breathing resistance - MBS  Adjsutable and combine with venturi
• Mouthpieces  2ea. A Comfo-Bite, installed, and a standard with bite wings in the box
• Lip shield  Included
• Heat Exchanger for freezing resistance Standard on all models
• 2nd Stage Weight  227 g
• Hose length  730 mm
• Overall work of breathing (WOB) scores  Avg. 0.70 joules/liter
• Nitrox compatible  Yes, to 40% O2 when new, out of the box