A:AnswerHello! Yes, the A3 Premium All-in-One 2-pack standard sonic toothbrush heads HX9092/65 are compatible with the Philips Sonicare ProtectiveClean 6100 Sonic electric toothbrush HX6877/21.
A:AnswerHello! The Philips Sonicare ProtectiveClean 6100 (HX6871/49) doesn't have Bluetooth or Wi-Fi. It's designed to provide a thorough clean without any connected features or data collection.
A:AnswerHi there! That is the brush head replacement reminder light. The Philips Sonicare ProtectiveClean 6100 Sonic electric toothbrush HX6877/21 is equipped with BrushSync technology that tracks the wear of your brush head. If the light turns amber, it's a reminder to change your brush head.
A:AnswerHello! We advise contacting our Customer Service for further assistance at 1-800-682-7664: Monday - Sunday 9:00 AM - 6:00 PM EST or chat with us through https://sforce.co/2MBIu3Y
A:AnswerHello! Yes, the 2 series brush heads are compatible with the Philips Sonicare Protectiveclean toothbrush. Any click on brush heads are compatible with your toothbrush.
A:AnswerI did frequently clean and dry my old one but there were places very hard to access where the moisture was being retained.
I'm not really asking how to clean it. I'm asking if the design has been improved, where their aren't these deep grooges, crevises, and lips that can't be cleaned and dried fully. Does that make sense?