Powerful Electric Toothbrush for Adults with Travel Case Sonic Whitening Toothbrush 5 Modes and 2 Minute Smart Timer Waterproof 3 Brush Heads Included Black By FairywillPOWERFUL CLEANING FUNCTION. THE BATTERY POWER OF THE TOOTHBRUSH IS LONG LASTING. It can be used for 30 days after charging for 4 hours. USB charging is compatible with any device with a USB port. And you don't have to worry about the battery of the electric toothbrush. When the battery is low, the indicator light of the toothbrush will be red and will automatically turn off when fully charged. 5 MODE. WHITE, CLEAN, SENSITIVE, POLISH, MASSAGE SUITABLE