SC 75 USB MS 507086 SC 75 USB MS is a double-sided, wired headset with both 3.5 mm jack and USB connectivity – certified for Skype for Business. Specifications: Wearing style On-ear, double-sided (binaural) headband Connector 3.5 mm jack and USB Frequency response (microphone) 150 Hz – 6,800 Hz Frequency response (headphones) 60 Hz – 16,000 Hz Microphone Noise-cancelling Max. sound pressure level Limited by ActiveGard® Headset cable length 1.12 m (from headset to 3.5 mm jack) USB cable length 1.38 m (from call control unit to USB plug) Cable length in total 2.5 m (from headset with 3.5 mm jack + detachable USB cable) Weight 130g Speaker type Neodynium Magnet Speaker Included in the box: Headset with 3.5 mm jack, foam ear pads and leatherette covers Detachable USB cable with in-line call control Carry pouch Quick guide Safety guide