SCOVEE USB to 2.5mm Male AUX Audio Jack Charging Cable for JBL Synchros S300 S300I S300a S400BT J56BT E40BT E30 E40 E50BT S500 S700 Headphones Stereo Power Wire for JBL Charger Cord
Amazon.com: NEW NEOMUSICIA Replacement Cable Compatible with JBL Synchros S300 S300I S700 S500 S400BT J56BT E40BT E30 E40 S400BT E50BT Headphone, Remote Volume Mic Compatible with iPhone only : Electronics
JBL Synchros S300 vs JBL Synchros S300 A: What is the difference?
JBL Synchros S300 NBA Edition On-Ear Headphones SYNOE300NYK B&H
JBL Synchros S300A Premium On-Ear Headphones with Mic (White/Blue)