Aqualung LEG3ND MBS Dive Regulator

Introducing the Aqualung Master Breathing System, a revolutionary advancement in underwater diving technology. The first inhalation under water marks the beginning of an exciting new adventure, and with the MBS, divers can experience unparalleled control and comfort like never before.

The innovative combination of the Venturi effect and inhalation effort adjustment makes the MBS system natural and intuitive to use. With just one simple rotation, divers can effortlessly control both features, allowing for a personalized and seamless diving experience every time.

Whether exploring shallow reefs or diving into deep wrecks, the Aqualung MBS system is designed to adapt to all depths and conditions. Say goodbye to the hassle of switching between settings – with the MBS, divers can focus on the thrill of the dive without any distractions. Invest in the Aqualung Master Breathing System and elevate your diving adventures to new heights. Experience the ease, comfort, and control of the MBS system today. It's time to take your underwater exploration to the next level.

First stage
• When the first stage is not connected to a cylinder valve, the Auto Closure Device (ACD) keeps the inlet shut to protect the first stage internal parts from contamination and corrosive water.
• Preserves the internal lubrication
• Keeps the inlet filter clean and dry
• Safer for elevated percentages of oxygen
• Exceptional cold-water performance is achieved by modernizing Aqualung's three anti-freeze properties:
• Where there's no moisture, there's no ice: The LEG3ND's integrated dry chamber keeps inner components clean and dry by isolating them from the outside environment
• Deep ribs create a large heat exchange surface area that helps to prevent ice forming on the mechanism (+30% vs Glacia / +70% vs Legend 2)
• The new overmolded cap delays ice forming over the external diaphragm
• Auto-Balanced (also known as Over-Balanced)
• Progressive increase of the working pressure to maintain optimum breathing efforts: Depending on the diver's depth, the working pressure of the first stage is automatically elevated to counteract the increased breathing air density
• Ergonomically shaped DIN and YOKE screws made of a bi-material “Soft Grip” surface provide a better hold when installing or removing the first stage – especially with cold hands
• Channeled YOKE screw to prevent water retention
• Specialized ACD Dust cap attached to the regulator body to protect the inlet fitting and the ACD system from impacts or damage
• Perfectly positioned HP and MP ports provide optimal hose routing
Second Stage
• New front cover opening channels allow water to flow sideways over the diaphragm
• Radial openings to prevent freeflows when diving in stronger currents
• Openings widened to reduce peak inspiratory flow by an impressive 20%
• New overmolded exhaust cover made of elastomer with a “soft touch” effect
• Overmolded air purge
• Wide surface area makes regulator purging easier
• Purge depth controller optimizes air flow with minimal effort
• Patented Comfobite mouthpiece reduces jaw fatigue and secures the second stage more comfortably
• Detachable and reusable mouthpiece clamp allows a quick and simple tool-free mouthpiece change without plastic waste
• The enlarged heat exchanger helps to prevent freezing of the second stage mechanism
• Air channel deflector
• Directs the air flow evenly during the inhalation phase
• Streamlined bi-material deflector lowers the exhalation effort
• Flexible and lightweight Aqua Flex hose with dual protectors

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
Second Stage
• 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