2 Pack Garmin Vivofit 2 Activity Tracker Fitness Band Monitor w/ USB ANT Stick - Black (Certified Refurbished) Certified Refurbished product is tested & certified by Garmin to look and work like-new. The product includes all original accessories, and is backed by a 90 Day warranty. Move bar w/audible alert- Reminds you to stay active throughout the day by displaying a red move bar and sounding an alert after one hour of inactivity. BACKLIT DISPLAY - The display is always on so you won't miss a beat. Turn on the backlight to see your stats, even in the dark 1 + year battery life - vivofit 2 stays on for more than a year without having to change the battery, so you don't have to worry about recharging. Shows steps, calories, distance and time of day on backlit display; monitors sleep