Amazon.com: BLUEXIN Replacement 2.5mm USB Charging Cord for JBL Synchros E40BT E50BT J56BT S400BT S700 Headphones and More : Electronics
Replacement Aux Cable Original 3.5mm to 2.5mm Audio Cable Jack 3.5 to 2.5 Headset Cord Cable for JBL E50BT J56BT S400BT S700|Earphone Accessories| - AliExpress
X24-CKF USB to 2.5mm Male, Ancable Headphone Charger Cable for JBL Synchros E30 E40BT E45BT E50BT EB40 S400BT S400 S500 S700 J56BT Wirel
Synchros E50BT | Bluetooth®, around-ear wireless headphones with ShareMe™ music
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