Wireless vaccum cleaner

It runs on a built-in rechargeable battery (usually lithium-ion). You charge it using a USB cable or charger (the box mentions “a variety of charging methods”). Once charged, it’s completely cord-free, so you can move around freely.

Cleaning head / floor nozzle
The long white stick has a floor head at the bottom with a brush or roller. As you push or pull it across the floor:
The brush agitates (loosens) dirt stuck in carpets or on hard floors.
Suction immediately sucks the loosened debris up through the tube into the dustbin.