Run the Garmin Instinct Solar GPS Smartwatch by using sunlight to power the battery. This GPS smartwatch has a solar battery to provide unprecedented battery life when exposed to the sun. As a result, you can spend less time charging and more time exploring. Alternatively, switch to the smartwatch mode to use this device for up to 54 days. Once it’s charged, there’s so much you can do. First, it incorporates a heart-rate monitor that monitors how hard your heart is working. It’ll even send you alerts if your heart rate is too low or high. In fact, the watch monitors your stress levels to encourage well-balanced, relaxing days. It’s also great for business use. Pair it with a compatible device, and it’ll send you an alert if you receive an e-mail or text. These features make this device great for all lifestyles.