The One works harder and faster with 13000 micro-vibrations per minute. Contoured bristles gently clean teeth for a whiter brighter smile. The One buzzes every 30 seconds encouraging you to move to the next part of your mouth. 2 Minute buzzer lets you know when the brushing job is done. Made to travel with a sleek and lightweight design. Pop off end cap and plug in the USB-C cable for easy charging. Battery lasts up to 30 days on a full charge. Includes: Philips One brush head. Philips One handle. Philips One travel case.