Meet any athletic or outdoor challenge with the rugged fenix 7X Sapphire Solar multisport GPS watch. Its scratch-resistant Power Sapphire solar charging lens uses the sun's energy to extend battery life - powering advanced training features, sports apps, health and wellness monitoring sensors and more. Get a battery boost from the sunlight, so you can go longer between charges. How is your body holding up? Wrist-based heart rate1 and Pulse Ox2 will let you know. Navigate with preloaded TopoActive maps and use built-in Wi-Fi for easy updates. Keep great tunes coming with music on your wrist - and no phone to weigh you down. When it gets dark, the built-in LED flashlight helps keep you going. Do more. Charge less. Solar charging yields up to 37 days of battery life in smartwatch mode3.