With the Sennheiser SP 20/SP 20 ML premium speakerphone, you can hold telephone conferences with your PC/softphone/mobile phone/tablet anytime, anywhere. Experience professional communication in detailed,... Show more With the Sennheiser SP 20/SP 20 ML premium speakerphone, you can hold telephone conferences with your PC/softphone/mobile phone/tablet anytime, anywhere. Experience professional communication in detailed, natural HD sound and voice quality. With the SP Series and its award-winning design, dual talk function, echo cancellation and sound optimization profiles, you can turn any workspace into your conference room in seconds. Developed for professional users in unified communications environments who use a softphone on a PC, mobile phone or tablet and value excellent design, excellent Sennheiser HD sound and an intuitive user interface. Optimized for all leading UC and softphone brands. The discreet, lightweight and award-winning design as well as the high-quality workmanship ensure first-class quality on your desk - or wherever your office is located. The SP 20 and SP 20 ML can be connected directly to the PC/softphone, mobile phone or tablet via the USB cable/3.5mm jack cable and merged into a conference. So all participants can follow at the same time - whether via PC/Softphone, mobile phone or tablet. Replace speakers and microphones on your PC and mobile phone with excellent Sennheiser sound quality. Sennheiser speech quality and echo cancellation ensure natural communication. Indicative buttons to control call answering and ending, muting and volume control - and easy cable routing. Sennheiser's Unified Communications Partner Program ensures that our wired and wireless headsets are compatible with the products and platforms of global telephony and unified communications providers.