Some AirPods Max users said that after wearing headphones, water vapor appeared in the earmuffs. After the user removed the ear pads, some water droplets appeared on the inner surface of the earmuffs, which may be caused by the condensation of the metal parts of AirPods Max in the hot and humid air environment.
Condensation occurs when cold objects come into contact with warm and humid air. AirPods Max uses a large number of metal materials. In addition, it is currently in the cold winter, and it is prone to condensation when worn out.
https://twitter.com/_manelsoler/status/1344799497604509696?s=20
So, uhh… my AirPods Max form condensation after extended use. They’ve never been used in any humid environment. The water gets inside the drivers and has caused ear detection problems. I’ve been wearing them inside sitting at a desk mainly, nothing crazy. Super concerning issue pic.twitter.com/0pWicvxLv9
— Donald Filimon (@underswitch) December 27, 2020
Apple officials have not yet responded to this. At present, a few people report that they have encountered such a problem, and some users posted AirPods Max headsets with water drops on the internal surface on Twitter.