I brought the 6100 after my 5100 had issue with the head started becoming loose and made a very loud noise. So I bought a 6100 and it has been fine bit the Bluetooth never worked. I really loved using the app with my 5100. But my new 6100 I have never been able to get the Bluetooth to work on it.

This is a great tooth brush and cleans wonderfully but let me tell you about the battery life on this thing! When I first opened it, I put it on the charger for about 24 hours before using. Now I only have to charge it once a year!!! Pretty incredible!

I love the fresh clean feeling after brushing with the 6100. But I am disappointed that it already needs to be replaced / serviced at two months of having it. I also had to change the the toothbrush brush head (I purchased the C3 heads and used one of those first). When I put on the toothbrush head that came with my 6100 it didn't fit on the metal shaft. It was very loose and would fall off. The brush was also louder than usual and it sounds like a rattle / something is loose in the unit. I contact customer support to get help with my issue and they were quick and efficient to help me out. Now I'm just waiting on my replacement handle.

This will be the second toothbrush system of this kind for traveling.

good price for a pair great toothbrush kit

Had to return the first one. The black case wouldn't close. Hopefully I have better luck this time.

Excellent toothbrush so glad I made this purchase from Sam’s !

Great perfomance! Like the timing function for brushing

Great electric toothbrush.

Hope it is as good as they tell me it is.