B07P6JCML8 Koss KPH7 Lightweight Portable On-Ear Headphones Bundle (Black, 20-Pack)

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CONNECTIVITY: Wired, 4-foot headphone cable connects to devices via 3.5mm plug
SOUND: Delivering incredible sound performance, it is ideal for listeners seeking ultra-light headphones
COMPATIBILITY: Works with any PC, Laptop, Smartphone, Tablet, Portable DVD player, radio and any other device, with a 3.5mm plug
ADJUSTABLE: Adjustable headband for comfort and secure fit