It includes an excellent product description:
This game takes the traditional Gladiator sport of Arm Wrestling to a whole new level! Strap on the wrist plate and get ready to wrestle. You get a mild electric shock.
NOTE: Not suitable for children or wimps.
What it should also say is, “not available in Japan.”
Ironically, the “not for wimps” game comes with rubberized elbow pads. That seems kind of wimpy to me.