PC, smartphone and tablet headset: Easy to connect and switch between devices.Rich digital stereo sound: Laser-tuned speaker drivers, built-in equalizer and noise-cancelling mic for crystal clear calls and music*.40 ft. wireless range: Listen and chat up to 12 m from your PC-or pair with your smartphone or tablet using Bluetooth.Six-hour rechargeable battery : Listen and chat longer with easy USB charging.Padded comfort: Adjustable padded headband and sculpted ear cups for a feel-good fit Logitech Wireless Headset H800. Connect to your PC, tablet and smartphone; enjoy rich digital stereo; and listen and chat longer with a six-hour rechargeable battery - with no wires to tie you down. Some functions of the headset may not be supported depending on the tablet, smartphone and/or application. Actual battery life will vary with use, settings and environmental conditions. Rechargeable batteries have a limited number of charge cycles.