Koss SB42 Communications Headphone REFURBISHED Experience fluid motion with a

Experience fluid motion with a 144Hz Adaptive Sync refresh rate

New smart battery modes help you extend your battery for multiple days

hook it up to power

IPX5 WATER-RESISTANT: Designed with the commuter in mind

Koss SB42 Communications Headphone REFURBISHED Experience fluid motion with aFeatures Detachable Boom mic with dual entry (left or right ear cup) Crisp studio quality sound D profile soft cushions create comfort for extended use Folds flat for easy storage 3. 5 mm plugs for both headphone and microphone. Connectivity technology: Wired detachable Koss SB42 communication headset delivers a full range of sound that enables you to not only hear clearly, but also speak clearly. Featuring Koss Clear Voice Technology (CVT), the SB42s