Review on AquaSonic 8 Pack Replacement Brush Heads by Wanda Johns

AquaSonic Duo does not support these attachments. You must sell the correct replacement. Just because they're black and white doesn't mean they're pen-ready. The right brush head is COMPACT, not as big as this one. There are currently NO BRUSH HEADS AVAILABLE that fit the AquaSonic Duo. As it is sold with 10 interchangeable heads, approximately 4 months per brush head (manufacturer's recommended duration per brush head), this device will last around 3 years, plus or minus 3 months for people (like me) who like to brush their teeth twice a day. All this to say that this is a great product but it needs proper replacement heads and I would like to give it a 5 star rating.