The latest technologies combined - offering true audio excellence.Active Noise Reduction - enhances the sound quality on the transmitted and received audio.Intelligent Volume Settings - equalizes incoming audio volume amplifying a quiet voice, reducing a noisy one.Acoustic Shock Protection - protects the ear from loud, sudden noises.e-SCO - improves voice transfer from headset to phone.Small Radical DesignThe BT8040 looks good and sounds even better - a small headset that makes a big design statement.