Lightspeed SierraSierra is everything you've been looking for in a value priced headset with the fit, comfort and features you've come to expect from Lightspeed. Sierra's features include ANR, Bluetooth connectivity, wired input for audio devices, auto ComPriority, and a reversible headband design that allows microphone placement on the left or right. Features: ANR Active noise cancellation over a broad range of low frequency noise bring state of the art technology to