The Polar Grit X Outdoor Multisport Watch offers all the features your adventurous life needs. In fact, this activity tracker has a built-in compass, GPS, altimeter, and more. You’ll even get information about barometric altitude, incline, ascent, and descent. With its Smart Coaching feature, this outdoor watch helps you achieve your best at all times. Moreover, the Polar Grit X offers up to 40 hours of battery life in training mode. So, while you’re using GPS and heart rate monitoring features, you’ll get nearly two days’ worth of life out of this watch. Additionally, it can last for up to seven days if you use it in watch mode only. Finally, its always-on display shows you a two-day weather forecast so you always know what’s coming.