Top features: - Effective cleaning with a long lasting battery - Pressure sensor with a 30 second timer Effective cleaning The Oral B 600 Electric Toothbrush has a TriZone toothbrush head for effective 3D cleaning. Helping to reach your back teeth, cleaning the surface of your teeth and sweeping between them, the toothbrush can be used just like a manual toothbrush, with the added benefit of power cleaning. Thanks to a long battery life that can last for up to seven days, you don't have to worry about having to recharge your toothbrush too often, with an easy to use charging station. Pressure sensor Featuring a pressure sensor that lights up if you brush too hard, the Trizone 600 helps to prevent harmful over-brushing. With a timer that buzzes every 30 seconds, you can always stay on top of how long you've been brushing for and when to change quadrant.