The Gennum nX6000 is roughly the size of a guitar pick and approximately as thick as a pack of gum. This makes it the lightest and most compact device in a roundup of Bluetooth headsets. In fact, the reviewer found that it’s easy for a user to forget that the nX6000 is in his ear. The built-in dual microphone gives this headset high-quality audio input by minimizing the ambient noise. The reviewer also pointed out that among the other devices in the roundup, the nX6000 produced the best audio in a noisy environment. Despite the high-quality audio input, audio output was a bit scratchy. Also, because of its size, the nX6000 has an unimpressive battery life. Still, if you’re looking for inconspicuous headsets with great audio input, this device is for you. The reviewer claims that the Gennum nX6000 is at the pinnacle of compact technology.