JBL Tune 600BTNC | Wireless, on-ear, active noise-cancelling headphones.
JBL T125BT Wireless Bluetooth Headphones | Pure Bass Sound
JBL Tune 115BT | Wireless In-Ear headphones
JBL Tune 510BT review - SoundGuys
JBL TUNE 215BT BLACK | Vanden Borre
Charging JBL TUNE Headphones Battery (How to TUNE510BT) - YouTube
Jbl tune 150 bt | Casas Bahia
JBL Tune 510BT | Wireless on-ear headphones
JBL T125BTBLK Tune 125BT Wireless Pure Bass Sound Black In-Ear Headphones | BrandsMart USA
I bought JBL headphones and found out they have these holes on both sides. What are they for? They're empty and kinda deep, the headphones aren't wireless so I guess it's not