Epos IMPACT D 10 USB ML Headset is a single-sided wireless DECT headset. The best-in-class, noise-cancelling microphones. Single connectivity to PC/softphone or single connectivity to desk phone. Easy magnetic docking and charging. Talk all day with comfort with upto 12 hours talk time and lightweight, single-sided headset. Wireless reach of up to 55 m/180 ft in typical offices, up to 180 m/590 ft line of sight.