This mid-range regulator is a balanced first and second stage design, it is part of Aqualung's core range. When comparing performance with price, Helix is a must have. It represents the DNA of the Aqualung regulators. The Aqualung Helix can be reviewed every 2 years. Balanced diaphragm first stage provides superior, consistent performance. "T" shape body for streamlined hose positioning. In-line ergonomic Venturi knob let's make precise adjustments, even while wearing gloves. The Helix regulator's provides amazing breathing, coupled with its generous features, and at an attractive mid-range price, provides the best value of any regulator offered today. The balanced diaphragm chrome plated marine brass first stage provides superior, consistent performance and the pneumatically-balanced second stage results in smooth, easy breathing.

The T-shape of the first stage optimizes the location of the 4 low-pressure (LP) ports and 2 high-pressure (HP) ports. The Helix Core uses parts that are common to other Aqualung models for easier servicing. The easy-to-grip venturi lever prevents unwanted free-flow at the surface while giving a performance boost at depth. The Helix Core regulator is compatible with EAN 40 new, out of the box. Equipped with Aqualung's patented Comfo-Bite mouthpiece installed with standard bite wing mouthpiece, along with a reusable mouthpiece clamp. The regulator weighs 31.22 oz (885g) and comes with a 29" (73.7cm) low pressure 3/8" threaded hose and owner's manual.

The Aqualung Helix Pro Octopus provides the same great performance as the Helix Pro primary second stage with its pneumatically-balanced second stage that results in smooth, easy breathing. Thanks to its highly efficient heat exchanger, it is up to the rigors of cold-water diving. With its 39" (99cm) Hi-Viz yellow hose and front cover, it will be ready to provide life-sustaining air in an out-of-air situation. The easy-to-grip venturi lever prevents unwanted free-flow at the surface while giving a performance boost at depth. A heat exchanger (patented) which surrounds the valve mechanism, dissipates the cold caused by gas expansion while drawing in the warmth of the ambient water. The Helix Pro Octopus Regulator is compatible with EAN 40 new, out of the box. Equipped with a silicone mouthpiece with ergonomic bite wings. Regulator second stage weighs 7.3 oz (207g) without the hose and comes with an owner's manual.