The XTX50 Octopus includes a breathing effort control knob for easy adjustment. The 2-stage progressive purge system allows for precise control. It can be converted from right-handed to left-handed hose configuration quickly and easily by an APEKS Authorised Service Technician. Braided flexi-hoses are now standard for lighter weight and durability. Suitable for cold water use and compatible with EAN40. Pneumatically-balanced second stage for smooth breathing. Large venturi lever with soft touch rubber grip for easy operation. Active protection against infection with additive that kills MRSA, E-Coli, bacteria, fungi, viruses, mold, yeast, and algae. Silicone exhaust valve for improved breathing performance. Comfo-bite™ mouthpiece reduces jaw fatigue.