Extend Time Underwater This course covers the handling and use of Nitrox mixtures up to 40% oxygen. You will learn on this course Analyzing Nitrox mixtures, calculating the maximum dive depth with the specific nitrox mixture, as well as zero time depending on the oxygen portion and dive depth are components of the course. This course does not include a diving trip. Course modules This course includes 2 modules of theory Incl. Certification fee Prerequisite The minimum age for this course is 12 years with the consent of one of the educators Duration Please schedule half an afternoon for this course Entire course duration: approx. 2 hours Cost The cost for this course is € 139.95.