Philips Sonicare DiamondClean Smart Rechargeable Electric Toothbrush This Philips Sonicare DiamondClean Smart Rechargeable Electric Toothbrush ($229) can even connect to their phone, so they can track brushing. Image Source: amazon.com Philips Sonicare DiamondClean Smart Rechargeable Electric Toothbrush $229 from amazon.com Buy Now