The Plantronics Discovery 655 Bluetooth headset fuses cutting-edge technology with a sleek, ultra-light and discreet design to deliver a mobile experience unlike any other. With Digital Signal Processing (DSP) ? the latest in audio technology ? the Plantronics Discovery 655 reduces noise levels to provide enhanced sound for clear conversations. It weighs only 9 grams and comes with an innovative charging system and secure carrying pocket that provides up to 10 hours of talk time using the optional AAA battery charger, and includes a unique vibrate ring indicator. The Plantronics Discovery 655 sets the standard for style, mobility and performance.