The cable can be stretched out, fixed at the stretched length, and then tightened back up - very impressive.
Compared to a noname charger, it delivers much more power.
But there is one caveat - if someone has a cigarette lighter in a narrow space or behind a narrow door in a recess, it may not fit. Because The 'leg' of the device itself is quite short - and then there is an extension. It's on the verge for me.