This rugged GPS smartwatch has dedicated surf features - such as tide data and a surfing activity-and windsurfing and kiteboarding activities. Plus, solar charging gives you unlimited battery life in smartwatch mode (assuming all-day wear with 3 hours per day outside in 50,000 lux conditions), so you don't have to leave the water until you're ready. Do more of what you love with preloaded activity profiles for running, biking, swimming, strength training and more.