This Philips Sonicare electric toothbrush provides optimal cleaning between teeth and along the gumline for improved gum health in just two weeks. Giving a superior cleaning in between teeth and removes significantly more plaque than a manual toothbrush. Dual Charging System: Charging glass and black travel case: 1) Charger glass - Simply place your Philips Sonicare electric toothbrush in the glass to charge. Can also be used to rinse your mouth after brushing. 2) Charging travel case - Connects to your laptop via USB or can be charged by wall socket. Allows you to take your DiamondClean anywhere and everywhere.