A:AnswerYes, they will work with all devices running iOS 10 or later, watchOS 3 and macOS Sierra. This includes all iPhone 5 models, the iPhone SE and all iPhone 6 and 6s models.
A:AnswerThese are not noise cancelling, so you will hear the background noise while listening to music, podcast, talking on phone, etc. However, the new AirPod Pros do have noise cancelling capability - meaning they will block out background noise.
A:AnswerApple is proprietary, meaning no company 3rd party or otherwise (aside from Apple itself) is allowed to alter or tamper with Apple product in any way, as to permanently make a change to the aesthetics or functionality of Apple products. It is a law that Apple has incorporated into ALL of their product contracts. The only thing affiliates or 3rd party companies may do is make what are considered "reversible" changes, such as applying a protective case or screen protector. I learned all about this when I bought a used iPhone online. I went to a store to have the old sim card removed and they would not do it. They explained that they'd be breaking the law if they did. Apple did this in an effort to maintain the validity of the product and so consumers would buy a new phone rather than breaking the seal to attempt to fix a broken one. It's not to say that consumers don't do this but the law makes it that much more difficult. I hope, to some degree, this answers your question. Whoever refused to engrave your merchandise should have known this. By law, the only company allowed to engrave an Apple product is Apple. In a nutshell, THEY WANT YOUR MONEY!!