eX-Mars Cube | Robot Cube Solving while Rolling @ex-marscube5978 | Uploaded July 2020 | Updated October 2024, 5 hours ago.
You can buy it on ebay.
ebay.com/itm/eX-Mars-the-Worlds-First-Intelligent-Robot-Cube/402401102663?hash=item5db0f98b47:g:w9cAAOSw42FezPdj%EF%BB%BF