What's the difference between the 3G series and the XLc series Lightspeed Headsets?
Other than the obvious change in the color scheme, there are a few different features on the LightSpeed 3G series that are not on the LIghtspeed XLc series. The 3G-battery box has a more ergonomic tear drop shape. The XLc battery box has a rectangular design. The battery box on the 3G also has a side tone equalizer (i.e. a bass and/or treble boost) that allows people to choose what sounds best to them. Another difference is the ear seal. On the 3G we have changed the outer coating to a leather-like material and increased the size of the ear opening. The internal foam remains the same as the XL, for that well-known comfortable fit. In the XLc series, we use a separate speaker for voice and the active noise reduction. The 3G series has a single speaker, dual driver system. With this system there is a noticeable upgrade in audio fidelity and intelligibility.