I would guess it is about 20', but the good thing is, there is a plug in the middle and you can extend it to any length by adding in a standard drop cord. My wife got mine at our local gun shop. But just google Do All White Wing and you can find them at lots of places.
There is also a wobbler kit available for it that I will probably add on later. I'm going to do a more in depth review later.
Thanks,
Donnie D