- Battery can very quickly (after about 3 months markedly)
- The red LED on the pressure control already extremely bright (hidden)
- The (original) brushes are extremely expensive (cheaper replacement brushes are not yet equivalent)
All in all, a good e-toothbrush, however, questionable why Brown (Proctor & Gamble) designed the battery is not easily replaceable. Instead of having to re-dispose of the entire device, you might as of spare parts -sprich earn the RC batteries.