Ordered the black model last month, it comes with: 1 brush head, 1 handpiece, 1 charger.

I'm not sure about the white variants as I didn't order those, but I think:
- "Light Blue, Mint, White" variant: 2 brush heads, 2 handpieces, 1 charger, 2 travel cases.
- Variant "Blue, White": 2 brush heads, 1 handpiece, 1 charger
- Mint, White" version: 1 brush head, 1 handpiece, 1 charger

The last variant seems to be offered by Digitec itself as well as by "techmania CH".
However, I don't know why all the variants cost different amounts, nor why it all has to be so complicated.