Garmin Forerunner 955 Solar GPS running watch

Details Long life for long runs and more Garmin's Forerunner 955 Solar takes the performance of the Forerunner 955 to another level by tapping into the power of the sun. Thanks to the Power Glass(tm) charging lens on this model, you'll feed power to the watch's battery whenever you're outside in the sun. With that boost, you can expect up to 20 days of smartwatch operation. Enough for both long runs and long expeditions.