You're built to push limits so is the Garmin Enduro GPS Watch. This ultra-performance GPS smartwatch is built for the toughest challenges with a lightweight design that is ready for heavy use. Take on the world with incredible battery life, including solar charging that lasts up to 320 hours in GPS mode (assumes continuous use for an entire period in 50,000 lux conditions). Light up the dark with the built-in LED flashlight, and enjoy long-distance comfort, thanks to a lightweight UltraFit nylon band. Preloaded TopoActive maps are optimized for outdoor activities to help keep you on course. For ultra-endurance athletes ready to conquer their wildest dreams, the Garmin Enduro GPS watch is for you. Smartwatch Technology: Designed for ultra-endurance athletes, with a lightweight design weighing just 63 g to help improve performance Take on the elements with a titanium bezel, scratch-resistant sapphire lens and built-in LED flashlight to light up the dark; UltraFit nylon band provides long-distance comfort even in punishing conditions Up to 90 days of battery life in smartwatch mode (assumes all-day wear with hours per day outside in 50,000 lux conditions) and 320 hours in GPS mode with solar charging (assumes continuous use for the entire period in 50,000 lux conditions) all with an always-on display, so you're ready to take on the toughest challenges Preloaded TopoActive maps are optimized for outdoor activities to help keep your adventures on track Dynamic round-trip routing allows you to set a target destination for your run, bike or hike; Enduro will continually adjust the route to get you back home on schedule Power up your body's performance, endurance and resistance to injury with targeted strength training plans, real-time stamina tracking and sport-specific workouts tailored for ultrarunners, cyclists, hikers and more.