AST is a dynamic technology which provides PROTECTION against water entering the 1st stage, without affecting the performance of the regulator. DIN or Int version.
Did you know that: We have a floating dive center on the Vinkeveense plassen? What makes boat diving for our daily expenses! That we really do diving lessons 7 days a week? that besides all SSI dive & EHBO / O2 / AED courses we are also qualified to give the most PADI dive & first aid / O2 / AED courses and we do (almost) all diving courses from our dive ship at no extra cost ... so also You can take a boat dive!