Oral-B Genius, Smart Series and iBrush Series are the highest end premium product from Oral-B’s electric toothbrush catalogue.
Smart series range are generally available in the UK and EU market, they range from Smart Series 4000 (which is in parallel to Pro 4000) through Smart Series 7000.
What’s the difference between Genius and iBrush Series?
Oral-B have different branding in different regions and territories, similar product can be branded as different series in different countries.
Genius range is generally market in US, UK, Australia and EU countries. While the same Genius range are marketed in China as iBrush series.
You can use the following chart to compare