. 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 hereKey Product Info . Ideal for all-day use long conference calls and listening to multimediaNoise canceling microphone masks nearby talkers for maximum call privacyConnectivity to smartphone and tablet via 3.5 mmOne-touch call answer/end volume +/- and mutePC wideband audio with noise-canceling microphones for high-quality PC telephony What\'s in the box? . Poly - Plantronics Blackwire C5210 USB-CCarrying case