Blu is a cordless smart toothbrush that was designed by Dentists to help fight against periodontal disease. Blu is a smart electric toothbrush that can help you remove harmful bacteria and plaque to give you healthier teeth. It has an ultra-slim neck and diamond-shaped bristles to provide you with optimal cleaning. Also, there are Five brush modes, you can get up to one month of battery life, and the blue bristles will fade away to let you know when it is time to replace the brush head. The Blu app will show you how well you are brushing your teeth and can also share the results with your dentist.