S1 is a smart device that keeps the toothbrush fresh and the bathroom clean. The bathroom, and especially the toothbrush, is a perfect environment for bacterial growth. With the Oclean S1 smart disinfection function, you can keep the toothbrush free of bacteria and save space in the bathroom. With UV-C light, the Oclean toothbrush is automatically sterilized every six hours so that it is always clean and safe to use.