Check the listing for details. Mares Rover 2S Regulator - Yoke or Din. Condition: New. Listed at 367.95 USD. DESCRIPTION2S First Stage The 2S first stage is a lightweight, robust and compact piston The DIN300 first stage piston weighs 432g. The INT version weighs 608g. Equipped with a dedicated seat for RFID chips. The sandblasted finish increases scratch resistance. Rover Second Stage The Rover second stage guarantees high performance even after intensive use. The new large vent button features a 'dynamic hinge' design, which makes the venting function easy to activate, even with a single finger. It also prevents free flow in the event of strong currents and is made of a durable rubber material that can withstand over 113,000 venting cycles. The patented Mares Vortex Assisted Design (VAD) system combined with the Fluid Dynamic Deflector (FDD) enables natural respiration at all depths. The Rover's combination of durability and performance make it the ideal regulator for intensive rental use. Rubber hose. Features 1st Stage - Yoke or DinLightweight, Sturdy And CompactPiston ControlDedicated Place For RFID Chip for rental use2nd StageEasy-to-use Purge Button With Dynamic Hinge DesignVAD System With Fluid Dynamic DeflectorMid-sizeOversized Purge ButtonRubber Hose Patented design which reduces the impact of water flow onto the second stage diaphragm, thus eliminating free flows even in strong currents. Abrasion resistant and affordable, ideal for diving in warm and moderate water temperatures. The air bypass tube delivers air to the mouthpiece creating a swirling vortex with a low pressure area in the center that keeps the diaphragm down during inhalation, for very sensitive and easy breathing at all depths. Minimizes intermediate pressure drop during inhalation thus maximizing gas delivery, especially under extreme conditions.