OVERVIEW: High-quality built-in microphone for a quiet hands-free call experience even in a loud environment. * The microphone only works in the wireless mode. Foldable and Rotatable Design: The foldable and rotatable design is not only designed for saving your desk space but for conveniently carrying in your bag. KEY FEATURES: Top Active Noise Cancellation Experience at a Lower Cost! Active Noise Cancelling Technology: It blocks out airplane cabin noise, city traffic or a busy office noisy...