The Jabra Engage 55 UC Mono, with charging stand, is a wireless DECT headset that offers military-grade 256-bit encryption, to ensure your conversation stay secure. The Jabra Engage 55 series have a Noise Cancelling microphone that blocks out background noise to keep you sounding professional. The speakers are optimized for speech clarity, while wideband audio delivers crystal clear audio. Plug the pre-paired Jabra Link 400 adapter into your PC or Laptop and youre ready to start taking calls. Unlike traditional USB dongles, the Jabra Link 400 has a unique, bendable design that delivers extra durability. Choose from USB-A and USB-C Adapters below. The Jabra Engage 55 Mono UC is optimised for Unified Communications (UC). Features: Wireless DECT Headset Crystal Clear Calls 9553-435-111 Specifications: Dimensions: H:14.0 x W:18.0 x D:18.0 cm Colour: Black Guarantee:2 years Material: Plastic Model Number: 100010630