Introducing the world's first real-time surf conditions watch! A UK online exclusive the Ultratide watch provides you with 10 times more data than a traditional tide watch.Powered by Surfline the watch can provide you with real time data: swell height/ direction forecasted swell height/ direction real time tide wind water temperature air temperature sky conditions and tomorrow's tide. With the Ultratide watch you'll never miss an epic surf session again. And once you're done. share it all via the Ultratide app! Size: one size.