Does Hal Jordan Have Powers Without His Ring?

Amusingly enough, less than two years later, Gardner Fox was at it again in Green Lantern #43, where Hal Jordan and Barry Allen trade superpowers for an issue, so Hal's super-powerful without his ring from the waist down in a whole other comic book story!

Does Green Lantern need his ring?

If it weren't for the power of their rings, Green Lanterns would be cut off from each other and their (now former) leaders, the Guardians of the Universe. That's why the power rings give the wearer telepathy, allowing them to communicate with their minds at speeds faster than light.

Does Hal Jordan have all the rings?

Hal Jordan

basically, every ring except Indigo, Phantom and Ultraviolet.