The BlueAnt Z9 leads the next generation of Bluetooth headsets with its stylish design and use of dual microphone, noise reduction technology via BlueAnt's patented Voice Isolation Technology and a revolutionary proprietary Digital Signal Processor (DSP) software solution. Weighing in at only 0.35 ounces and measuring just 1.5 inches in length, the Z9 is also one of the smallest Bluetooth headsets on the market. See if this Bluetooth headset is worth the cash!