![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 Harman Live Free NC+ TWS, Bluetooth Earbuds, True Wireless, Active Noise Cancelling, Charging Case, Quality Sound, iPX7 Water Resistant - 10w Pad Black (Renewed) : Electronics Amazon.com: JBL Harman Live Free NC+ TWS, Bluetooth Earbuds, True Wireless, Active Noise Cancelling, Charging Case, Quality Sound, iPX7 Water Resistant - 10w Pad Black (Renewed) : Electronics](https://m.media-amazon.com/images/I/613lgzMNwKL.jpg)
Amazon.com: JBL Harman Live Free NC+ TWS, Bluetooth Earbuds, True Wireless, Active Noise Cancelling, Charging Case, Quality Sound, iPX7 Water Resistant - 10w Pad Black (Renewed) : Electronics
![Amazon.com: JBL REFLECT FLOW - True Wireless Earbuds, bluetooth sport headphones with microphone, Waterproof, up to 30 hours battery, charging case and quick charge (black) : Electronics Amazon.com: JBL REFLECT FLOW - True Wireless Earbuds, bluetooth sport headphones with microphone, Waterproof, up to 30 hours battery, charging case and quick charge (black) : Electronics](https://m.media-amazon.com/images/I/71J04DDpw-L.jpg)