Check the listing for details. Sherwood SR2 Regulator. Condition: New. Listed at 749.95 USD. The sr2 regulator continues the legacy the sr1 created. It packs advanced technology into a compact case, employing contemporary styling and utilizing a multitude of cutting edge materials. Superior breathing performance of less than 0.5 Joules/Liter, W.O.B. At 165 fsw, 62.5 RMV. The sr2 is more technically advanced and more attractive than its predecessor. 2Nd stage features: one touch performance adjustment, pneumatically balanced second stage, super flex hose, nitrox ready up to 40%, large flexible purge cover, smart demand lever - relieves load on seat. Extends seat's life while in storage, improved flexible purge cover. 1St stage features include: completely dry and environmentally sealed, five low pressure ports on a 360 degree swivel, two high pressure ports, two-piece piston for precise optimum balance and intermediate pressure control. One touch performance adjustment Pneumatically balanced second stage Super flex hose Nitrox ready up to 40% Large flexible purge cover