Ten years ago, most people used wired headphones or earbuds that plugged directly into their phones or iPods (which are also sort of a thing of the past now). Wireless and bluetooth paired devices were not so common, but as audio jacks have disappeared from devices, wireless and rechargeable headsets dominate the market. Airpods never would have been conceivable a decade ago, especially at an asking price of over $100 when you could get a $10 set of earbuds at Walmart that worked just fine.