Roentgenium is a synthetic element, meaning it doesn't occur naturally in the environment. It's extremely unstable and has a very short half-life, meaning it decays rapidly into other elements.

Therefore, no products contain roentgenium. It's only ever produced in tiny, fleeting amounts in specialized laboratories for research purposes.

While it's not used in any commercial products, studying roentgenium helps scientists understand the behavior of heavier elements and the structure of the atom.