The difference is that the X40 Ultra is the basic model and the Dreame X40 Ultra Complete comes with even more accessories.

Basic model:
- 1 main brush
- 1 side brush
- 1 dust bag
- 1 dust container filter
- 1 mop pads


Complete version:
- 1 main brushes + 1 more
- 1 side brushes + 2 more
- 1 dust bag + 3 more
- 1 dust container filter + 2 more
- 1 mop pad + 12 more
- 1 litre cleaning solution