Using only L side of the earphones | HA-A7T | User manual
JVC HA-FR9UC-B Gumy Connect USB-C™ Earphones with Remote Control with Easy Push Buttons and Microphone On/Off - Black : Amazon.co.uk: Electronics & Photo
JVC HA-A7T-BU Gumy True Wireless in-ear headphones - Black – Car Audio Centre
Gumy Wireless Bluetooth Earbuds HA-A7T2-W - White – JVC UK