The Blackwire 5200 Series fits your busy workday. Ergonomically designed, it\'s comfortable enough to wear all day, on your longest calls. The Blackwire 5200 Series - the power to connect and work easily is here. Features Deal for all-day use, long conference calls and listening to multimedia Noise cancelling microphone masks nearby talkers for maximum call privacy Connectivity to smartphone and tablet via 3. 5 mm One-touch call answer/end, volume +/- and mute PC wideband audio with noise-cancelling microphones for high-quality PC telephony