The Mi Smart Electric Toothbrush T500 has a high-performance magnetic suspension acoustic motor. It features a high-density non-rust metal-free brush head. It customises a range of brushing patterns and modes through the APP control. There are 3 levels of cleaning vibration modes. It has an over pressure cleaning reminder. The Mi Smart Electric Toothbrush T500 uses wireless sensing charging which has up to 18 days endurance.