PADI Enriched Air Diver Manual DVD Enriched Air Digital Video (20 minutes) Retail Price: ¥5,364 Dive computers always have an enriched air setting mode, so please study and utilize it properly. It has been opened, but there are no noticeable scratches on the disc. The Mercari Nekopos shipping fee is discounted until September 30th, so I am offering it at a reduced price during that period. Please note that I cannot offer any further discounts.