Connects to: Simply and easily connects to a Mobile, PC or Mac Ideal for: Users transitioning to a PC for telephony, webinars, conference calls and other applications Audio performance: Clear, natural and rich audio with wideband audio a noise cancelling microphone along with enhanced digital signal processing (DSP). SoundGuard: Acoustic limiting for protection against sounds above 118 dBA Intelligent features: A lightweight metal headband offers durability and a comfortable custom fit Global warranty & wearing style: 2 year global warranty; over the head wearing style with dual earpiece