The Garmin vivofit 2 010 01503 31 Activity Tracker comes with a 1 year battery life and backlit display
It even reminds you to stay active throughout your day with its move bar with audible alert that lets you know when you've been idle for an hour or longer. It follows your progress 24 7 thanks to its 1 year battery life. Set the sleep mode when you go to bed and it will monitor your rest. It learns your current activity level, then assigns an attainable daily goal. As you meet your milestones, vivofit 2 will adjust your goal for the next day, gradually nudging you toward a healthier lifestyle.