The Vivosmart 4 comes with a Powder Grey band and a sliver Bezel. The special thing about Vivosmart 4 is it has an energy monitor that tells you when you should be burning extra energy and when you should be resting. This allows you to burn carbs without over exerting yourself making the Vivosmart 4 the perfect asset for reaching your fitness goals.
The founders of Fitbit, Eric and James used modern technology to make a device that helps people track their activities throughout the day. The Fitbit was made to empower people to be most active and invest in their future health.