![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 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](https://m.media-amazon.com/images/I/51vWIANjZ1L._AC_UF1000,1000_QL80_.jpg)
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
![Amazon.com: Replacement Ear Pads Pillow Earpads Foam Cushions Cover Cups Repair Parts Compatible with JBL Synchros S300 Headphones Headset : Electronics Amazon.com: Replacement Ear Pads Pillow Earpads Foam Cushions Cover Cups Repair Parts Compatible with JBL Synchros S300 Headphones Headset : Electronics](https://m.media-amazon.com/images/I/61B18ICWEZL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Replacement Ear Pads Pillow Earpads Foam Cushions Cover Cups Repair Parts Compatible with JBL Synchros S300 Headphones Headset : Electronics
![Amazon.com: ABLET Audio Cable for JBL Synchros S700, S400BT, J56BT, S300, S300I, S300a, S500, S700, E40BT, E30, E40, E50BT,S400BT Headphones Red 3meter/9.9ft : Electronics Amazon.com: ABLET Audio Cable for JBL Synchros S700, S400BT, J56BT, S300, S300I, S300a, S500, S700, E40BT, E30, E40, E50BT,S400BT Headphones Red 3meter/9.9ft : Electronics](https://m.media-amazon.com/images/I/71oiCcV7waL.jpg)
Amazon.com: ABLET Audio Cable for JBL Synchros S700, S400BT, J56BT, S300, S300I, S300a, S500, S700, E40BT, E30, E40, E50BT,S400BT Headphones Red 3meter/9.9ft : Electronics
![Bluetooth 5.0 Wireless Handsfree Stereo Adapter For JBL Synchros S300 S300I S300a S500 S700 S400 J56 E40 E30 E50 Headphones|Earphone Accessories| - AliExpress Bluetooth 5.0 Wireless Handsfree Stereo Adapter For JBL Synchros S300 S300I S300a S500 S700 S400 J56 E40 E30 E50 Headphones|Earphone Accessories| - AliExpress](https://ae01.alicdn.com/kf/H9d47f0345f534f9ebe670d07cd511f64p/Bluetooth-5-0-Wireless-Handsfree-Stereo-Adapter-For-JBL-Synchros-S300-S300I-S300a-S500-S700-S400.jpg_Q90.jpg_.webp)
Bluetooth 5.0 Wireless Handsfree Stereo Adapter For JBL Synchros S300 S300I S300a S500 S700 S400 J56 E40 E30 E50 Headphones|Earphone Accessories| - AliExpress
![JBL Synchros S300 Premium On-Ear Headphones for iOS with built-in remote/Microphone - Black/Blue Headphones & Accessories - Newegg.com JBL Synchros S300 Premium On-Ear Headphones for iOS with built-in remote/Microphone - Black/Blue Headphones & Accessories - Newegg.com](https://c1.neweggimages.com/productimage/nb640/26-985-041-11.jpg)
JBL Synchros S300 Premium On-Ear Headphones for iOS with built-in remote/Microphone - Black/Blue Headphones & Accessories - Newegg.com
![Amazon.com: JBL Synchros S300 Premium On-Ear Stereo Headphones with Apple 3-Button Remote, White/Red : Electronics Amazon.com: JBL Synchros S300 Premium On-Ear Stereo Headphones with Apple 3-Button Remote, White/Red : Electronics](https://m.media-amazon.com/images/I/61s9eeumSSL.jpg)