USB to 2.5mm Male AUX Audio Jack Charging Cable Adapter Cord for JBL Synchros S300 S300I S300a S400BT J56BT E40BT E30 E40 E50 - Walmart.com
2.5mm USB CHARGING Charger Cable For JBL Synchros E40BT/E50BT Headphones J56BT | eBay
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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
Amazon.com: Ancable USB to 2.5mm Male, Headphone Charger Cable for JBL Synchros E30 E40BT E45BT E50BT EB40 S400BT S400 S500 S700 J56BT Wireless Headphones Replacement Charging Cable : Electronics
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