12 months unless you visit us in-between that time and do some refresher training, then it can last another 12 months from that date. It is also possible to be signed off at AIDA 2* Pool Freediver level (you would be charged a nominal fee for the certification if doing it using this method). Most people however want to move onto the open water section of the course and complete the full AIDA 2* Freediver course.