![Amazon.com: JBL Tune 510BT: Wireless On-Ear Headphones with Purebass Sound - Black : Clothing, Shoes & Jewelry Amazon.com: JBL Tune 510BT: Wireless On-Ear Headphones with Purebass Sound - Black : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61-RGAukodL._AC_UF894,1000_QL80_.jpg)
Amazon.com: JBL Tune 510BT: Wireless On-Ear Headphones with Purebass Sound - Black : Clothing, Shoes & Jewelry
![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 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](https://i.redd.it/zkm9dihmx0b51.jpg)
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
![Amazon.com: JBL Tune 510BT: Wireless On-Ear Headphones with Purebass Sound - Black : Clothing, Shoes & Jewelry Amazon.com: JBL Tune 510BT: Wireless On-Ear Headphones with Purebass Sound - Black : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61yjoRgptdL._AC_UF894,1000_QL80_.jpg)
Amazon.com: JBL Tune 510BT: Wireless On-Ear Headphones with Purebass Sound - Black : Clothing, Shoes & Jewelry
![Jbl Tune 125BT Draadloze Bluetooth 5.0 Oortelefoon T125BT Sport Bass Geluid Snel Opladen Headset Magnetische Oordopjes Handsfree Met Mic|Bluetooth Oordopjes & Koptelefoon| - AliExpress Jbl Tune 125BT Draadloze Bluetooth 5.0 Oortelefoon T125BT Sport Bass Geluid Snel Opladen Headset Magnetische Oordopjes Handsfree Met Mic|Bluetooth Oordopjes & Koptelefoon| - AliExpress](https://ae01.alicdn.com/kf/H7e86fac9180c496cab89cebfcdcad15dT/Jbl-Tune-125BT-Draadloze-Bluetooth-5-0-Oortelefoon-T125BT-Sport-Bass-Geluid-Snel-Opladen-Headset-Magnetische.jpg_Q90.jpg_.webp)