From Philips, this 3100 Series Sonic Electric Toothbrush features:  Sonicare technology removes plaque 3x better than a manual Bristle vibrations drive deep between teeth and along gum line Built-in pressure sensor warns to ease off pressure 2 Minute SmartTimer and 30 second QuadPacer guide ensures you reach all areas of brushing Switch between 2 intensity settings Ergonomic design supports an amazing clean without strain Battery lasts up to 14 days on a single charge  Easy-Start program option of gradual gentle use for the first 14 uses Power: DC 5V Includes 3000 Series handle and C1 ProResults standard brush head   Imported.