The serial number of this machine can be found on the official website
- Reason for recommendation: Restore genuine bass effect, true light sense, and stable quality
- Imported chip true double microphone + no power trip
- True light sense, listen to songs at will, and keep connecting
- Fourth-generation icons, support negative screen constant display + audio sharing
- Original sound quality + positioning and name change + UI screen + serial number
- Original shell + metal hinge + smart pop-up window + three true power + wireless charging function.
Apple's fourth-generation headphones