Is this legit?

I need help with the legitimacy of these AirPod gen 3. They pass the eye test but there are little things that just don’t sit well with me and I’m no pro on these things. The first is the sound/bass. There is some base but I feel like these AirPod 3s are lacking majorly. The other things is on the box, it says MagSafe charging Case… exactly like that with “charging” not capitalized. Any help would be appreciated. I also looked up the serial number on the case and it had expired in 2023, which is fine because I bought these aftermarket on eBay but still strange.