[This review was collected as part of a promotion.] I used the 4000 for many years. When rechargeable batteries gave out I went to the 4100 which has some improved options.
[This review was collected as part of a promotion.] To be honest I picked this because my dentist told me I needed to start using an electric toothbrush. He can see the results, I enjoy using it and it works. So I do recommend.
[This review was collected as part of a promotion.] I chose this product because I had great results the last time and the product lasted for years. No regrets, this one works awesome too.
[This review was collected as part of a promotion.] I would definitely recommend this product, timer is great. The Product is easy to use and very effective.