Dect Microsoft Headset Binaural wearing style covers both ears for increased stability and focus Best-in-class range of up to 400 feet - walk and talk up to 400 feet from your phone Intelligent Fast Charge means you'll get up to 12 hours of talk time in a one hour charge! Protect your hearing with ActiveGard technology. Ultra-Comfortable - with a wearing style that covers both ears with soft leatherette ear cushions, the fit is more like a comfy pair of headphones than a headset