Aqualung LEGEND MBS Dive Regulator

Aqualung LEG3ND MBS Dive Regulator

Master Breathing Control with a Single Intuitive Adjustment

The Aqualung LEG3ND MBS is a premium cold-water regulator that combines the rugged performance of the LEG3ND platform with a simplified breathing control system. Designed for divers who want exceptional performance and intuitive operation, the MBS version features a single rotating control that adjusts both Venturi flow and inhalation resistance simultaneously.

With the same overbalanced diaphragm first stage, environmental sealing, and superior thermal protection as the standard LEG3ND, the MBS adds convenience without compromising control. This regulator is built for divers who value simplicity and reliability in demanding environments.

What’s New in the LEG3ND MBS

• Master Breathing System (MBS) – One control adjusts both Venturi and cracking effort
• Redesigned ergonomic front cover and internal flow path
• Same rugged performance, with simplified breathing adjustment

Key Features

• Overbalanced diaphragm first stage – ensures consistent performance at depth
• Auto Closure Device (ACD) – protects internal parts from contaminants and water
• Environmentally sealed – ideal for cold, silty, or contaminated waters
• Deep thermal exchange fins – prevent freezing in extreme cold
• Pneumatically balanced second stage – provides smooth, easy breathing
• Master Breathing System (MBS) – single control for dual breathing adjustments
• Wide exhaust tee – diverts bubbles for clear vision
• Comfo-Bite™ mouthpiece – minimizes jaw fatigue
• 2 high-pressure and 4 medium-pressure ports – flexible configuration

Technical Specifications

• First Stage Type: Overbalanced diaphragm
• Environmental Seal: Yes
• Auto Closure Device (ACD): Yes
• Second Stage Type: Pneumatically balanced
• Breathing Adjustment: Single MBS knob (Venturi + resistance)
• Mouthpiece: Comfo-Bite™ with reusable clamp
• Ports: 2 HP, 4 MP
• Cold-Water Rated: Yes – EN250A compliant
• Weight (Second Stage): Approx. 210 g
• Orientation: Left or right compatible

The Aqualung LEG3ND MBS is the ideal regulator for divers who want top-level performance with simplified control. Perfect for cold-water and deep dives, it offers reliability, comfort, and confidence—now with a streamlined breathing adjustment for every dive condition.