Fossil Watch Sport Smartwatch Grey Silicone FTW6025P. Fit for every style, this ultra lightweight 41mm Sport smartwatch features a neon silicone strap, lets you track your heart rate, track your workout, even swimming, customise your dial and more. Smartwatches powered with Wear OS by Google are compatible with iPhone¨ and Android phones. Wear OS by Google and other related marks are trademarks of Google LLC. Touchscreen smartwatches powered with Wear OS by Google require a phone running Android OS 4.4 or iOS 9.3 . Supported features may vary between platforms.