2pack USB to 2.5mm Male AUX Audio Jack Charging Cable for JBL Synchros S300 S300I S300a S400BT J56BT E40BT E30 E40 E50BT S500 International Power Cords - Newegg.ca
JBL Synchros E50BT 2.5mm csatlakozóval series USB töltő kábel - Hálózati tápegység adapter - Intercell
Sqrmekoko Replacement Charging Power Supply Cable Cord Line for JBL Synchros E40BT E50BT J56BT S400BT S700 and AKG K490NC K495NC N60NC Headphones (6inch) : Electronics - Amazon.com