Each leg is equipped with computer chips in each leg, as well as built-in motors, to ease the process of walking long distances. Past versions of the prosthetic legs were provided only to people with one good, working leg. The robot leg would imitate the existing, organic leg.

With Bleill's set, each leg mimics the other, thanks to Bluetooth technology that sends signals over a short distance. When Bleill stands up and leans forward, the legs get the signal to start walking.

After several steps, the legs have worked out a coordinated walking motion that continues until Bleill signals them to stop by apply resistance to forward motion with canes.

And yes, this is the very same Bluetooth technology that you use in your cell phone, or other enabled device.

So how well does it work? Bleill seems pretty impressed.

"We've compared walking several laps in both sets of legs and one, your legs come out burning and tired and these, you know, you sometimes are not even breaking a sweat yet."

There may be a Star Trek: The Next Generation correlation to these legs. In one episode, Worf is paralyzed and one of the options is to use transmitters to help his legs move again.

Earlier than that, fans may recall the bionic legs from Cyborg, the novel from which The Six Million Dollar Man was created:

They had created, lovingly, with infinite attention to detail, a bionics and electronics duplicate of what had been the legs of Steve Austin... ...where revascularization was not possible, they used plastic and cerosium and Dacron and silastic and whatever else was necessary... They were opening nerve endings and preparing bone. They were on the brink of a new world of the human and bionics, of joining living flesh and bone to electronics and steel and vitallium and plastic and tiny, powerful units of nuclear energy... Human and human-made were brought together, connected, spliced, wired, sealed...
(Read more about Steve Austin's bionic legs

Update 28-Feb-2025: In his interesting 1949 story The Cybernetic Brain, science fiction writer Charles Recour describes a prosthetic leg with a brain:

It was an artificial leg, so cleverly and so artfully designed that it could hardly be told from a real one. Dr. Schmidt handed it to Larry. “Feel it,” he said, beaming, “it’s made of plastic and titanium. It doesn’t weigh very much.”

Larry hefted the incredibly real contraption. To the touch, it felt as if it were made of human flesh. Its lightness was due to its being made of titanium, a metal as strong as steel, but much lighter. Its upper portion carried a web strap-and-belt arrangement for attaching, to the thigh.

('The Cybernetic Brain' by Charles Recour)

"[Dr. Clydestone] will bring out the desired nerve endings from the end of the stump. He’ll connect them through platinum wires to little cable connectors... to seven nerve-endings protruding from his flesh, terminating, in ordinary electrical connections!"

But it was not the leg itself which was the real impressive agent; rather it was the electronic brain and the servo-mechanisms servicing it. Servomechanisms were simply electric or hydraulic motors whose motion was precisely controlled from a distance by electronic means.

The leg was to function, in a way, as a servo-mechanism operated by Larry’s brain, through the mediation of the electronic brain in the leg. It might be said that the artificial leg was a robot.