Shure RMCE-TW1 - Bluetooth Adapter; battery lasts up to 8 hours; range up to 10 metres; Bluetooth 5.0; switchable environment mode; compatible with all Shure Sound Isolating earphones with detachable cable; free ShurePlus™ PLAY App for EQ, environment mode and volume adjustment; black; incl. transport case with charging function, USB-C cable for connection to a charger