Description
If you want to do dive 1 & 2, you will only need to book a two tank dive. When you will do it, indicate in the comments that it is an Open Water training course.
If you want to do dive 3 & 4, you will have to book a two tank dive and this product for the certification.
If you want to do dive 1 to 4, you will have to book 2 x two tanks dive and this product for the certification.