An inflator reg combines a backup regulator with a BCD's buoyancy control system in one compact, at-the-ready unit. SCUBAPRO introduced the inflator reg concept to diving almost 30 years ago with the introduction of the AIR2 (short for Alternate Inflator Reg). Now in its 5th generation, the AIR2 delivers air as smoothly as most primary second stages, and unlike traditional dangling octos, it is always within easy reach if needed. As a BCD power inflator the AIR2 fits comfortably in the hand, and the large inflate and deflate buttons can be differentiated by both color and touch, improving safety on ascents. The AIR2 was diving's first inflator reg and, with five generations of improvements, it's still the best.

With the MK25 EVO/A700 you are guaranteed a reliable, low-effort delivery of air, no matter how hard you're breathing, how deep you're diving, or what your temperature gauge reads. The MK25 EVO first stage lets you enjoy an ultra-fast breathing response, instant delivery of air on demand, great sensitivity and extra-high airflow, regardless of how cold the water is. The A700 second stage, with its metal casing, screw-down cover, metal valve housing (barrel) and over-molded accents, exhibits a real muscularity in design. Put them together and you get unparalleled breathing performance whether you're cruising the balmy waters of the tropics or venturing beneath a polar ice cap.