Koss

Koss Headphone Bluetooth BT540

Wireless Bluetooth Sound with AptX integrated electronics for enhanced acoustical clarity
On-Board Control to change volume, tracks, and answer calls
Soft Memory Foam Cushions create the perfect seal and long lasting comfort
On Board Microphone
Koss PLX40 Dynamic Element precisely tuned to feature crisp highs, robust mids and smooth lows for the ultimate personal listening experience