Defean Replacement Ear Pads Cushion Headband For Jbl Synchros S400bt S 400 Bt Bluetooth Headphones - Earphone Accessories - AliExpress
JBL Synchros S400BT On-ear wireless Bluetooth® headphones at Crutchfield
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