Epos IMPACT DW Pro 1 (DW 20) USB ML Premium Headset is a single-sided wireless DECT headset. The best-in-class, noise-cancelling microphones. Maximize speech intelligibility with EPOS Voice™. Has multi-connectivity to switch between softphone/PC and mobile calls. Talk all day with comfort with upto 12 hours talk time and lightweight, single-sided headset with extra soft ear pad. With DECT protected frequency band and wireless reach of up to 180 m/590 ft.