Samsung 2.1CH Bluetooth Soundbar w/ Wireless Sub

The description states the subwoofer is “wired”, does it need to connect to the soundbar via wire? Or does “wired” just mean it needs to be plugged in?

Now I see conflicting statements. Under the “Features” tab, towards the bottom, it says “wired subwoofer”. On the “specs” page it says wireless subwoofer. Can you clarify which it is?