Multipoint pairing ATH-M50xBT2 headphones to PC and Apple devices | Audio-Technica
https://www.audio-technica.com/de-de/support/multipoint-pairing-ath-m50xbt2-headphones-to-pc-and-apple-devicesMultipoint pairing ATH-M50xBT2 headphones to PC and Apple devices Learn more about the multi-pairing feature of the ATH-M50xBT2 Wireless Headphones that allows users to connect to two devices simultaneously.
On the other hand, non-Apple devices will usually use codecs such as Qualcomm® aptX