Over the past several years, Nothing’s budget-centric subsidiary, CMF, has built a reputation for producing attractive, inexpensive products with features often reserved for gadgets that cost twice the price. The CMF Headphone Pro — the company’s first pair of over-ear wireless headphones — fit precisely in that lane, especially now that they’re on sale at Amazon in both light gray and a subtle green shade for an all-time low of $69 ($30 off). Although the Headphone Pro eschew the retro-