The CC 540 is the headset for maximum productivity. Thebinaural headset offers powerful, precise sound to both earsfor optimal understanding. Its durable construction makes itperfect for any type of office or professional communication.- ActiveGardTM safeguards the user from the effects of an acoustic burst- Independent, double-sided headband adjustment and self-adjusting ball-mounted speaker capsules allow perfect fitting to the head- 300° adjustable microphone boom allows microphone to be positioned exactly for optimal speech clarity. Teflon washer support increases positioning accuracy, stability and ensure optimal durability.- Unique comfort pads in the headband and specially padded ear caps distribute pressure and ensure remarkable comfort even during extended wearing time- Binaural headset ensures maximum block out of background noise, increasing concentration and efficiency