這款全新 MK2 EVO/R105 調節器系統以簡單可靠著稱，是潛水學校、租賃中心與新手潛水員的理想選擇，同時也適合熱衷休閒潛水的玩家作為備用呼吸系統。它提供順暢穩定的氣流，並以耐用設計確保長久使用。R105 二級頭，採用與 S620 Ti 相同的緊湊外殼設計，配備防刮前蓋與經典的下游閥金屬結構，確保耐用性與性能。配備潛水/預潛水 VIVA 開關，以及柔軟的共模成型排水按鈕，操作輕鬆便捷。支援左右兩側管線配置，適合用於階段氣瓶或備用氣瓶。MK2 EVO 一級頭，作為 SCUBAPRO 的經典一級頭，MK2 EVO 是唯一採用下游活塞設計的型號，內部機構特別針對極寒水域設計，具有優異的防凍性能。這套調節器組合不僅耐用可靠，價格也相當親民，是追求性價比的潛水員與機構的最佳選擇。

一級頭 (First Stage)

• 經典下游活塞設計：採用鍍鉻黃銅機身，配備一個高壓接口與四個低壓接口，結構簡單且耐用。
• 專利 XTIS（延伸隔熱系統）：完全隔絕內部機械元件與外部冷源的接觸，防凍性能比前代提升 50%，同時不影響呼吸表現。
• 內部技術升級：包括彈簧隔熱襯套與塗層、隔熱活塞襯套、隔熱套筒及防凍蓋，進一步提升防凍性能。
• 鍍鉻船用級黃銅機身：體積比前代更小，但配備更大的活塞，提供更高的氣流效率與呼吸性能。
• 不鏽鋼可拆卸孔口：便於維護，延長調節器使用壽命。
• 符合 EN250-2014 標準：通過冷水呼吸性能認證。
• 重量：INT 232 規格為 670 克；DIN 300 規格為 450 克。
• 氣流表現（2900psi/200bar）：>3000 升/分鐘（106 標準立方英尺/分鐘）。
• 中壓範圍：138-145psi / 9.5-10bar。

二級頭 (Second Stage)

• 經典下游閥設計：配備潛水/預潛水 VIVA 開關，有效控制自由流。
• 金屬閥體結構：堅固耐用，提升整體可靠性。
• 可逆式呼吸管連接：便於用於側掛氣瓶、備用氣瓶或減壓氣瓶。
• 超大內徑呼吸管：確保每次吸氣都能提供充足的氣流。
• 緊湊型高流量咬嘴：提升氣流效率與口腔舒適度，適合各種嘴型，從小到大皆適用。
• 重量（不含咬嘴）：156 克。
• 氣流表現（2900psi/200bar）：1200 升/分鐘（42 標準立方英尺/分鐘）。

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Simple and reliable, the new MK2 EVO/R105 is the regulator system of choice for diving schools, rental centers and new divers, as well as avid recreational divers looking for a basic backup breathing system. It offers smooth dependable air delivery and is built to last. The compact casing is based on the S620 Ti with an anti-scratch front cover and a metal classic downstream valve design. Included is a dive/pre-dive VIVA switch plus a soft, co-molded purge button for easy purging, and left or right hose routing for use on stage or pony bottles. Teamed with SCUBAPRO’s classic MK2 EVO, the only downstream piston-style first stage with internal components specifically designed to resist freezing in extreme cold-water conditions, this new regulator combo is durable, reliable and affordable.

First Stage

• Classic downstream piston design features a chrome-plated brass body with one high pressure and four low pressure ports.
• Patented XTIS (Extended Thermal Insulating System) fully isolates the mechanical elements from the cold, increasing freezing resistance by an average of 50% over its predecessor without compromising breathing performance.
• Additional internal technical improvements include a spring insulating bushing and coating, an insulating piston bushing, an insulating sleeve and an antifreeze cap, all of which contribute to freezing resistance.
• Chrome-plated marine-grade brass body is smaller than its predecessor but houses an oversized piston that provides better breathing performance by increasing airflow.
• Stainless steel removable orifice allows for easier maintenance while extending regulator life.
• Meets EN250-2014 standards for cold-water breathing performance.
• Weight (oz/g): INT 232, 23.6/670; DIN 300, 15.9/450.
• Airflow at 2900psi/200bar: (l/min/SCFM): >3000/106.
• Intermediate pressure (psi/bar): 138-145/9.5-10.
  

Second Stage

• Classic downstream valve comes with a dive/pre-dive VIVA switch to control free flows.
• Metal valve housing is built rugged and increases overall reliability.
• Reversible hose attachment makes it easy to use for side mount, pony or deco tanks.
• Super-flow hose features an oversized bore that allows more air to flow on each inhalation.
• Compact Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all mouth sizes, from largest to smallest.
• Weight (without mouthpiece): 5.5oz/156g.
• Airflow at 2900psi/200bar: 1200 l/min - 42 SCFM.