Amazon.com: 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
USB to 2.5mm Male Charging Cable cord For JBL S300 S300I S300a S400BT headphones | eBay
Audio Cable wire Remote MIC For JBL S300 S300I S300a S400 S500 S700 Black | eBay
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
Amazon.com: 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
Amazon.com: 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
Usb Type C 2.5mm Replacement Cable Cord For Jbl Synchros S300 S300i S300a S500 S700 S400bt E40bt E30 E40 E50bt J56bt Headphones - Protective Sleeve - AliExpress
USB to 2.5mm Charging Cable Cord Adapter for JBL S300I S300a S400BT J5 – Magconn
USB to 2.5mm Charging Cable Cord Adapter for JBL S300I S300a S400BT J5 – Magconn
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 S300a (White/Red) On-ear headphones with in-line remote and microphone at Crutchfield
Best Buy: JBL Synchros S300a On-Ear Headphones Black/Blue SYNOE300ABNU