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. Additional segments lightup for every 15 minutes of inactivity. Walk for a couple of minutes to reset. 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. ACTIVITY TIMER - Record activities with or without a heart rate monitor. 1 + year battery life - vvofit 2 stays on for more than a year without having to change the battery, so you don't have to worry about recharging. Auto Sync - vvofit 2 automatically syncs with paired mobile devices3 at strategic times throughout the day, such as when a goal is met or when several steps have been taken since the last sync.