The Plantronics Voyager Focus UC B825 Headset with USB Type-A Adapter is able to take calls and listen to music while wirelessly connected to your computer, Bluetooth-enabled desk phone, mobile phone, or tablet easily. The Plantronics Voyager Focus UC Headset is able to provide you with up to 12 hours of talk time. The headset has a roaming range up to 29.9m and has a triple-mic boom and active noise cancellation, allowing you to concentrate on your calls and music. With built-in smart sensors, the headset can detect when you take it off and automatically mute your call or pause your music. The Voyager Focus headset features voice alerts that announce caller ID, connection status, and talk time, while a dynamic mute alert warns you if you try to talk while the headset is muted. Optimized for use with standard unified communications apps, this version of the Voyager Focus includes a magnetic charging stand and a USB Type-A Bluetooth adapter with a mute status indicator. Wear the headset any way you like and the controls will be where you expect them. The controls for pause/play, track forward/back, and volume adjust to how the headset is oriented. Stereo design with A2DP provides hi-fi stereo sound (20 Hz - 20 kHz) and an immersive audio experience. The headset also offers wideband audio performance up to 6800 Hz. The Voyager Focus features leatherette ear cushions wrapped around soft memory foam, while the cushioned metal headband provides durability while maintaining a comfortable, secure fit. Folding ear cushions and the included carrying case let you take the headset on the go. Active noise canceling (ANC) allows you to focus on your caller and not your background noise. Three noise-canceling microphones allow far end callers to hear you and not your environment.