The 100LX has the performance of the 150LX, but is paired with the DC3 for a great value regulator. All LX regulators come standard with MiFlex hoses and orthodontic mouthpieces with dual color tabs. The LX regulators come standard with Hollis's Lifetime Warranty, 2-Year Service Interval and Free Parts for Life Features: Pneumatically balanced chromed-plated brass valve results in smooth, easy breathing Reversible demand valve, can be converted from right-handed hose configuration to left-handed hose configuration Adjustable Dive/Pre-Dive switch: Large Venturi lever has a soft rubber grip, which makes it easy to locate and use Chrome Plated Brass Valve Ergonomic exhaust channels bubbles away from field of view and reduces exhaust effort Improved orthodontic mouthpiece with dual color tabs Plastic Cosmetic Ring MiFlex braided hose