Tide data for over 200 beaches worldwide</br>Digital tide graph</br>"Suffer and Recover" interval timer</br>Heat Mode with countdown time to practice your surf heats.</br>New patent pending OKTOLOCK system secures the watch to your wrist with more flexibility and a lighter feel</br></br>Product Description</br></br>Tide data for over 200 beaches worldwide</br><br/>http://www.amazon.com/gp/product/B06XCVHCT5