It takes 15-45 minutes. Put the Bluetooth headset in the charging bay, it will be fully charged in about half an hour, but its charging bay takes a longer time. Generally speaking, the charging compartment takes about 2-3 hours to be full, and the charging speed of Bluetooth headphones is very fast, or take airpods as an example, it only takes 30 minutes to charge to a high level of power.
Wireless headphones can be charged for ten hours at a time, because if you listen continuously, ten hours can fully meet your listening needs