Product Description Specifications The Thames Headphones with large earmuffs and a USB cable are designed for use with a PC or Laptop and Skype, Teams or Zoom video conferencing. The Thames is an over-the-head style headphone complete with an adjustable headband, omnidirectional microphone and a controller to increase or decrease the volume and answer or mute the microphone. Materials: ABS, Foam. Product Size: 187 x 185 x 85 mm Branding Area: 40 x 12 mm (controller), 40 x 12 mm (headband) Standard Packaging: White Box Certification: CE, FCC Specifications: Headset Input: USB Connector, Speaker Size: 40mm, Sensivitity: 105±3dB, Frequency Range: 20HZ-20KHz, Microphone: 6.0 x 5.0mm, Microphone Sensitivity: -38±3dB, Cable Length: 2 metres.