Both the Soladey 3 and the Ion5 are the same toothbrush. However the Soladey 3 at £35.00 comes with one medium bristle head attached while the Ion5 at £39.00 comes with a soft head attached and axtra replacement soft head and a little head protector case for travelling. We don’t have any stock of Ion5 at the moment.
All of the replacement heads will fit all Soladey toothbrush models. The sets of replacement head come with 4 units in a packet and they are £21.00.
Everything described above is of genuine Japanese product as you will see from the Japanese script on the packaging!
It should make sense now!