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JBL Tune 510BT Wireless On-Ear Headphones | Brand Makers - Buy promotional products in Spanish Fork, Utah United States
![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://preview.redd.it/zkm9dihmx0b51.jpg?auto=webp&s=5a648f35d0bca46bee5fc831ffed44638080c89c)
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
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JBL Tune 510BT Wireless Headphones, 32mm Drivers, Built-In Mic for Hands-Free Calls, Multi-Function Voice Assistant Button, Up to 40H Battery Life, Padded Headband & Ear Cushions, Blue | T510BTBLU Buy, Best Price
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JBL Tune 770NC Adaptive Noise Cancelling Wireless Headphones - Tjara - B2B, B2C, Buy, Sell, Auction - Lebanon
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