There are words in the charging box, generally some batch numbers of the factory, the production model does not have to be overly concerned about, some equipment has some different batch numbers are not available.
AirPodsPro is a wireless earphone from Apple that supports active noise cancellation. It's the third generation of Apple's AirPods, and it has a new in-ear look instead of the classic look that EarPods have used for years. In-ear is mainly designed to support noise reduction features to enhance the listening experience. This is the biggest difference between the previous two generations.
Not really. It's just in the charging bay.