[This review was collected as part of a promotion.] This is my 2 Sonic. This one the brush head seems to be smaller. I had to check the box to see if I bought a child’s brush. I’m using it but not thrilled
[This review was collected as part of a promotion.] I appreciate my Sonic. My hygienist says I don't need all of the fancy features on the more expensive models, plus my last button on my Sonic handled two years of use, so more buttons and features aren't what I am looking for. I went to my dentist yesterday and he said that whatever I am doing for mouth health I should continue doing. I have been using Sonic electric toothbrushes for twenty years.
[This review was collected as part of a promotion.] This is the third Norelco Sonic toothbrush I have owend. After many years of good service, the other two batteries finally wore out. The 4100 series is, of course, an advanced version of the ones I used befrore and has been performing even better. I am very pleased with this purchase and expect better dental reports as it has been over 5 years since the previous one finally would not accept a battery charge - the batteries are not replaceable (sealed). While the Owner's Manual states that you can leave the brush on the charger, I had done that with the first two and I think that is why the batteries eventually built up a resistance to continued charging. This one is allowed to sit on the counter (flat bottom is stable and the brush air dries). On the first charge, I got 3 weeks of daily use before it indicated a need for a recharge.
[This review was collected as part of a promotion.] I really like the toothbrush -- when it's working. This is my second. The on/off button on the first one deteriorated and it would no loger turn on easily. The cover came off. I bought a new one becasue I liked it.