A UK online exclusive the Ultratide watch is the world's first real-time surf conditions watch! With 10 times more data than a traditional watch the Ultratide watch is in exclusive partnership with Surfline the global leader in surf forecasting for over 30 years. The watch can prodive you with swell height/ direction forecasted swell height/ direction real time tide wind water temperature air temperature sky conditions and tomorrow's tide. And with no charging needed you'll be ready for every session whether you planned it or not! Size: one size.