This is not a child’s toy or something you would use at the gym.
The military is testing an amphibious robot guard ball called GuardBot, according to IFLScience.
GuardBot is about 2 feet in diameter, though it can be scaled anywhere between 9 feet and 4 inches. The robot can be directed by remote control or be programmed to travel along an area that has been pre-defined via the onboard GPS.
The amphibious robot is capable of moving across a variety of terrain, including sand, grass, mud, and snow and can swim through water.
The robot can also climb up hills with a 30 degree slope. The robot features two onboard high-definition cameras that can be independently oriented.