The Plantronics Blackwire C325-M is an advanced Binaural headset that offers USB and 3.5m connectivity. The C325-M shares the same high quality audio features as the C320-M. These include enhanced DSP technology, Noise Cancelling microphone, Wideband audio and SoundGuard protection. The C325-M differs from the C320-M in that it features a high quality leatherette ear cushion that can fold flat for easy portability. The C325-M features an intuitive inline control unit that enables you to answer, end, mute and control the volume of calls. Certified for Microsoft Teams (MT). Features: Wireless DECT Headset Crystal Clear Calls 204446-101 Specifications: Dimensions: H:6.0 x W:16.0 x D:20.0 cm Colour: Grey Guarantee:2 years Material: Plastic Model Number: 100004793