The 1.4” Power Sapphire lens harvests the sun’s energy, giving you more power and time between chargesAutoSelect mode uses SatIQ technology to dynamically determine the GPS mode necessary to maximize battery life without compromising positional accuracyThe rugged, lightweight design won’t slow you down, and the light UltraFit nylon band provides a secure, comfortable fit during all of your activitiesNavigation tools help you find your way with preloaded TopoActive and ski mapsA superbright LED flashlight (twice as bright as the fēnix 7X multisport GPS watch) offers variable intensities with a strobe that matches your running cadence; red safety light mode helps you keep an eye on your immediate surroundings while running at nightThe NextFork map guide shows the distance to the next trail intersection; grade-adjusted pace helps you understand how to adjust your pace over varying terrain, and an automatic rest timer logs your breaksA variety of built-in sports apps, an Adventure Racing World Series-approved adventure racing app and advanced performance metrics — plus endurance and stamina — help you take your training to the next levelTraditional button controls that work in any environment are matched with a highly responsive touchscreen interface for quick, convenient access to selectionsTraditional button controls that work in any environment are matched with a highly responsive touchscreen interface for quick, convenient access to selectionsBattery performance with solar charging: up to 46 days in smartwatch mode (Assumes all-day wear with 3 hours per day outside in 50,000 lux conditions) and up to 150 hours in GPS mode (Assumes continuous use for entire period in 50,000 lux conditions)