No doubt about it, the MK25 EVO/G260 BLACK TECH is a serious reg system designed for the most demanding divers. The air-balanced flow-through piston-style MK25 EVO BLACK TECH is consistently ranked as the top-performing first stage on the market. Its patented Extended Thermal Insulating System (XTIS) 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. Add the fins on the machined body that provide extra thermal exchange and you have the ultimate first stage for all water temperatures.
Both first and second stages have a BLACK TECH scratch-resistant coating that protects against the ravages of salt water and corrosion. This durable coating includes an inner layer of chemical Nickel (FDA approved) and an outer glossy DLC (Diamond Like Carbon) finish. It's a rugged reg system that delivers solid breathing performance in all diving conditions and water temperatures. It's a serious balanced piston breathing system that's as tough as it looks. You can count on this outstanding reg to deliver top-of-the-line performance in all diving conditions and water temperatures, no matter how hard you're breathing, how deep you're diving, or how cold the water gets.