Review on Electric toothbrush Oral-B Smart 4 4900, black/pink by Amar Amar ᠌

Li-Ion battery. You can always keep the brush on the charger and each time you use it will be fully charged. The previous Oral-B Smart 6 6000 brush had a Ni-Mh battery and it was annoying that I had to discharge it to the end every time. The Oral-B Smart 4 brush is thinner than the Oral-B Smart 6. It's nice. And it's easier to brush your teeth. The clock-timer from the Oral-B Smart 6 kit also fits Oral-B Smart 4. And it displays the modes and stages of brushing - it was a pleasant surprise. Excellent quality for cleaning teeth, gums and tongue! You can turn off unnecessary brushing modes using the application. Contactless charging allows you to rinse the brush after use under running water. There is no unnecessary functionality that makes Smart series brushes more expensive.