Feature superior passive noise cancellation with enhanced memory foam padding and new angled design that cancels 48% more of the noise. Powerful leak-tolerate 40mm speakers. Enhanced 3-microphone call technology means 23% less background conversation noise on calls. Microphone sensitivity is -26 dBFS/Pa. Up to 37 hours of battery life on a single charge. With a 15-minute charge giving you up to 8 hours of use. Made with durable, premium materials, the soft memory foam cushions mold to your ears. Works with all leading Unified Communications platforms, including Microsoft Teams, Cisco, Mitel, Avaya & more for truly seamless collaboration. Includes the Jabra Link 380a (USB-A) Bluetooth adapter.