A:AnswerYou have a choice when using--You can choose Noise Cancellation or Transparency mode. For safety reasons I would always choose Transparency mode when exercising outside or only use one AirPod so you can hear traffic around you.
A:AnswerYes, they are Bluetooth earphones, hold the button in the back of the case with the AirPods in the case until they appear in your Bluetooth devices.
A:AnswerLiterally nothing except different functionality. The regular air pods have active noise canceling and noise canceling so the pro aren’t doing anything different.
A:AnswerI wear just one bud all the time and it works just fine! Even wearing one it does seem to still do some noise cancellation in that ear you have it in.
A:AnswerI assume you can as long as your sound bar has Bluetooth. There is a button on the back of the case to pair them with devices that aren’t from Apple.