The P311 works seamlessly with any gadget that supports Bluetooth technology such as mobile phones & notebooks. You can also use it with your PC by simply connecting it with ARCTICs USB (Universal Serial Bus)-dongle of UD1 & UD2. With a range of up to 30 meters, this headset gives you full flexibility without disturbing people around you. The integrated lithium-ion battery lasts up to 20 hours of music playback before it needs to be recharged via USB (Universal Serial Bus). Absolute Control Thanks to the five functional buttons, integrated into the right earcup, you always have full control over your music. You can start/pause/skip music tracks, answer incoming phone calls & control volume levels. Outstanding Audio Quality The integrated 28mm drivers excel in high fidelity. Whether its rock, jazz or classical, all different genres of music can be enjoyed without any compromise. Thanks to the outstanding bass, this headset enriches your listening experience when listening to your favorite music or when watching a movie. The good signal-to-noise-ratio of 95 d B of the integrated amplifier guarantees best digital sound. Versatile & Comfortable The soft earcups & the supra-aural design not only provide a comfy fit, they also isolate your ears from exterior noise. Thanks to its light weight of only 71g, the headset doesnt become uncomfortable, even after long periods of use. This makes the P311 perfect for sports, as it doesnt get loose while jogging or biking. The device can conveniently be stored inside the included travel case for traveling purposes. Besides, the integrated microphone enables all forms of voice communications, such as MSN & Skype from your PC.