RLT203 Advantages&Features -31,000 up to 48,000 powerful sonic strokes per minute -three brushing modes(normal,soft,massage) -Two minutes auto-timer help clean interdental area effectively -Full charge last for up to six weeks RLT203 The toothbrush cleaning It has 30-seconds invertal timer that encourages even brushing and whitens teech. The efficaly of dental plague removed by using sonic electric toothbrush in adult. Our Service If any quality problems such as design,manufacture,and function occur within the guarantee period, we shall take full responsibility,and provide on-site service. Show More