Gennum nXZEN Plus 5500 Bluetooth Headset Frontwave Extreme Stereo music playback from connected MP3 or CD players and mutes playback when you answer a call Built-in wireless 5-band graphic equalizer enables you to customize your headset audio with a Bluetooth-connected PC Hear your caller clearly with an amplified in-ear receiver that cuts through the clatter and boosts acoustic separation Let your caller hear you clearly with next-generation FrontWave Extreme technology that instantly amplifies your voice, reduces background noise and filters wind noise Features the world's most powerful digital signal processor (DSP) available in any Bluetooth headset, with 120 MIPS of digital processing power for high performance and advanced features