MP3 players with Bluetooth v5.3

Bluetooth v5.3

— the Bluetooth v5.3 wireless communication protocol was introduced in early 2022. Among the innovations, the process of channel agreement between the controller and the device was accelerated, a function for quickly switching between low-duty-cycle operation and high-speed mode was implemented, and bandwidth and connection stability were improved by reducing susceptibility to interference. In the event of unexpected interference in Low Energy mode, the procedure for selecting a communication channel for switching is now accelerated. No fundamental innovations are presented in protocol 5.3, however, a number of qualitative improvements are apparent.