A:AnswerThese are currently in stock at my local Best Buy, if you check online I’m sure you will find out if they are available at your local Best Buy also..
A:AnswerOnly online at Apple.com
Engraving is only exclusive online, since at an Apple Store or at a Retailer’s they would only give you AirPods that they already have in store.
A:AnswerIt’s connected by Bluetooth so it’s compatibale with any Bluetooth compatible device. Apple is nice to have because the icon pops up with it showing how much battery the case and each individual pod has of charge left