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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
Amazon.com: Replacement Charging Power Supply Cable Cord Line for JBL Synchros E40BT E50BT J56BT S400BT S700 Headphones (Black) : Electronics