Question about Dreame V11 Handheld

Here are the contents of the delivery:

- Wireless suction cup V11
- 1 x power adapter
- 1 x roller brush suction head
- 1 x dust mite removal brush
- 2 in 1 holder for storage and charging
- 2 in 1 flat suction head
- Brush
- 1 x metal connecting hose
- 1 x extension rod
- Instructions for use