JBL Synchros S300 vs JBL Synchros S400BT: What is the difference?
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JBL Synchros S300 Premium On-Ear Headphones for iOS with built-in remote/Microphone - White/Blue Headphones & Accessories - Newegg.com
Amazon.com: NEW NEOMUSICIA Replacement Cable Compatible with JBL Synchros S300 S300I S700 S500 S400BT J56BT E40BT E30 E40 S400BT E50BT Headphone, Remote Volume Mic Compatible with iPhone only : Electronics
Usb Type C 2.5mm Replacement Cable Cord For Jbl Synchros S300 S300i S300a S500 S700 S400bt E40bt E30 E40 E50bt J56bt Headphones - Protective Sleeve - AliExpress
JBL Synchros S300a Premium Headphones Works with Android & Apple~Rarely Used | eBay
JBL Synchros S300 Premium On-Ear Headphones for iOS with built-in remote/Microphone - Black/Blue Headphones & Accessories - Newegg.com