Harnessing the power of the sun with mission-ready features, the Garmin tactix Delta Solar GPS watch gives you the ability to track your fitness, navigate the trails and go covert in the field. Rugged yet sophisticated watch tested to U.S. military standards (MIL-STD-810) features an always-on 1.4 in. display with black DLC-coated bezel and nylon band Scratch-resistant solar charging lens extends battery life, with customizable power manager modes to achieve long-lasting battery life for weeks on end Advanced training features with improved performance monitoring include an upgraded acclimation 2.0 widget to track your fitness and outdoor expeditions Smart features include enhanced wrist heart rate estimates, smartphone-compatible notifications and a Pulse Ox sensor for altitude acclimation or sleep monitoring Preloaded with TOPO maps, a public land map, ski maps for 2,000 ski resorts worldwide, multi-GNSS support and advanced sensors for easy navigation outdoors Specialized tactical features include waypoint projection, night vision mode, dual-position format, stealth mode and kill switch Stealth mode disables location sharing and wireless connectivity; a kill switch wipes all user memory to start from scratch Supports Garmin Pay™ for contactless payments where available; offers music storage with third-party streaming service provider (not included) and more