Question 1

Does it develop mold in the area where the brush head connects to the handle? My very old one does.

Accepted Answer

Yup. Mold is a huge problem for mine; I've owned several versions. I found it was preventable by taking the brush head off to dry and clean it and the connector area after each use; but then, within a couple months, the strain of taking it off and on again so frequently seemed to break something in the base, and it no longer vibrated well. I ended up switching to a cheap knockoff from overseas, that nonetheless doesn't have the connection gap, and works great. Only problem now is I have no idea how I'll get replacement heads that fit...

Question 2

What is the difference between this toothbrush and the sonice 2 series?

Accepted Answer

The 4100 has lithium battery, the series 2 uses NiMH. 4100 can be put on charger daily. Series 2 needs to have a drained battery before recharging. The 4100 also has a pressure sensor. I had the same question, and this is the response I got from Phillips.

Question 3

Is this charger compatible with voltage range of 220V?

Accepted Answer

Hello! Yes, you shouldn't have any issues charging this toothbrush on your travels as long as the voltage of the outlet you're plugging into doesn't exceed 220V. The voltage for this particular Sonicare is 100-220V.

Question 4

I purchased this in October and it's already broken. The head won't stay in place in the handle.What's the process of getting a replacement or refund?

Accepted Answer

I’m confused why so many people leave comments expecting amazon  to monitor the comment section of every product- which is impossible- or - they ask questions not knowing how customer service works. 
Contact the company (Amazon), tell them there is a problem and return it. Amazon’s customer service number is on this website, or google “Amazon customer service number” and it shows up…then call it. Or use the help feature at the bottom of the page, click “need more help” and chose “chat with associate”. Unless you’ve been in a cave since 1990, this shouldn’t be this difficult. I hope this helps some people out, however firmly worded.

ASIN	B078GVDB19
ASIN	B078GVDB19
Age Range Description	Adult
Amazon Bestseller	#155,920 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #934 in Electric Toothbrush Replacement Brush Heads
Batteries	1 Lithium Polymer batteries required. (included)
Brand Name	PHILIPS
Bristle Material	Nylon
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (30,536)
Global Trade Identification Number	00075020069948
Handle Material	Plastic
Included Components	Timer
Is Discontinued By Manufacturer	No
Item Dimensions	6.5 x 17.3 x 23.7 cm
Item Firmness Description	Hard
Item Weight	0.01 Ounces
Item model number	HX6817/01
Manufacturer	Sky Stone
Manufacturer	Sky Stone
Manufacturer Part Number	HX6817/01
Material Features	Reusable
Model Name	ProtectiveClean 4100
Model Number	HX6817/01
Mount Motion	Oscillate
Number of Items	1
Number of Pieces	1
Number of settings	2
Operation Mode	Automatic
Other Special Features of the Product	Rechargeable
Package Type Name	Box
Power Source	Battery Powered
Product Dimensions	6.5 x 17.3 x 23.7 cm; 0.28 g
Reusability	Reusable
Target Audience	Uni (Adult)
Theme	Oral Care
Toothbrush Head Shape	Round
UPC	099778599892 368817444883 075020069948
Unit Count	1.0 Count

Philips Sonicare HX6817/01 ProtectiveClean 4100 Rechargeable Electric Toothbrush, White (Packaging May Vary)

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