Smart Vibration Timers A built-in smart chip coaches you to a healthier smile by offering a 30 second vibrational "nudge" so you know to move on to a new quadrant of your mouth. An auto-timer powers black series down automatically letting you know you've brushed for the full dentist recommended 2 minutes. A single overnight charge will last a full 30 days. The included travel case lets you take your black series on vacations both short and long without needing to take your charger. * What's in the Box - 1 AquaSonic Black Series Smart Toothbrush, 8 DuPont brush heads, 1 travel case and user manual.
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