The Oral-B Smart 6 6000 comes in 3 different versions, all of which have the same electric toothbrush handle. The main difference is between the brush heads that come as standard in the box. Smart 6 6000N is the most common version and comes with the 1 x crossaction, 1 x sensitive and 1 x 3D white brush head as standard.
Oral-B Smart 6 6000S is the sensitive version and comes with 2 x sensitive and 1 x crossaction brush head as standard.
Smart 6 6000W is the whitening version, I would not recommend buying this one. It comes with 2 x 3D White brush heads and 1 x crossaction.
@toffi2@