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Amazon.com: USB to 2.5mm,Ancable Replacement USB Charging Cable (3ft / 1m) for JBL E40BT E50BT J56BT Headphones (Black) : 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
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USB Charging Cable to 2.5 mm Audio Jack as Replacement for AKG / JBL / Harman Kardon K495NC Headphones etc., B | 800115403
Ancable Replacement USB Charging Cable (3ft/1m) for jbl Synchros E40BT/E50BT/J56BT Headphones 25mm USB Charging Cable - Newegg.com