The Apeks Tungsten regulator features a two-stage adjustment function and a stylish black design. It has only been used once after an overhaul. We recommend an overhaul as some time has passed since the last dive. The total cost if purchased new would be over 340,000 yen. - Brand: Apeks - Model: Tungsten - Type: Regulator XTX Tungsten Regulator (Swivel Flex Hose Specification) The first stage, with a physical vapor deposition (PVD) coating of chrome, titanium, and zirconium (a synthetic diamond), is Apeks' toughest regulator yet. The "XTX Tungsten" is reborn with the same performance as the XTX 200, combined with unparalleled toughness. First Stage Over-balanced diaphragm type Dry chamber seal mechanism 2 HP ports / 5 LP ports (upgrade kit standard) Second Stage Second Stage Purge button with two-stage usability depending on how it's pressed Balanced type second stage Demand adjustment knob Venturi adjustment switch Comfo Bite mouthpiece Heat exchanger Reversible Venturi system Diver changeable exhaust tee Swivel flex hose specification - Accessories: Compass - Collect 2 Gauge (Compass Type) The Collect 2 Gauge (Compass Type), which combines a submersible pressure gauge and a compass, is a stylish and easy-to-read dual gauge. The submersible pressure gauge displays from 0 to a maximum of 360 bar. The compass has viewing windows on both the left and right sides, allowing for visibility whether the hose is routed to the right or left. It's a thoughtfully designed gauge that can be easily read without unnaturally bending your arm. Octopus - Octopus Egress An innovative, compact octopus. The balanced type second stage provides an exceptional breathing experience. It is perfectly compatible with Apeks' high-grade models. - Color: Black - Features: Two-stage adjustable Thank you for looking.