If you see a boxy, ordinary looking radio that can only be used to receive FM/AM radio, built-in mono speakers, LCD display, sound input holes, everything ordinary to the extreme, HMM! Sell him 150 dollars, there should be nothing more silent in the world!
Sony called it a "radio," not just a radio, and even said it was a big step forward in technological breakthroughs. Let's just say that the late Henry Kloss (the originator of the radio) would have jumped out of his coffin when he heard that, how could anyone be so insensitive as to plagiarize it after 30 years?