A certified diver knows, that tracking each dive in a log is not only helpful to see progress, for safety-reasons and to be able to dive at sites where you need to proof a certain amount of dives, it tracks memories as well. You remember your buddies, the best dive-sites, the most fun and the pictures come back alive when you flip through your log book. This Book lets you track all your data like a pro! From all gear used, weights, cylinders, depth, time, to RNT (residual nitrogen time), ABT (actual bottom time), TBT (total bottom time), temp, visibility and many more. And of course a lot of space for your remarks and memories and a designated field for stamp and confirmation . It's small (5x8 in), so it can be easily stored in any bag. If you know a scuba diver, this log book can be a great gift all around the year! The next dive is for sure to come! Specifications: Cover Finish: Glossy - Dimensions: 5" x 8" (12.70 x 20.32 cm) - Interior: Log pages for 110 dives - Pages: 110