Under Armour 39 Watch The Under Armour Armour39 Watch is an updatable, app-enabled watch with a LCD display that puts your workout data from the Armour39™ module front and center for you to see no matter where or how you workout. Display options include heart rate, intensity, calories burned, and WILLpower™, plus basic watch functions. WILLpower™ is the first true measure of an athlete. It boils your workout down to a single score from 0.0 to 10.0 to tell you how hard you worked. Access and toggle between up to 30 stored workouts right on the watch using the calendar memory. Double tap the face for a backlight display that lets you see how you’re tracking during nighttime training. Display goes to sleep after one minute of no movement to preserve battery life. Includes an alarm with daily, weekday, or weekend settings for timing yourself or workout reminders. Water-resistant up to three meters.