Features Bluetooth® 5.0 technology and Mesh 2.0. Features a versatile Jog Dial for effortless operation. HARMAN-KARDON version of the 50S HD speakers are slimmer and trimmed around the edges for a comfortable fit with a helmet on; audio output delivers crystal-clear sound quality. Features multi-language support and direct digital assistance; can be used with Google Assistant and Siri through voice commands. Talk time of 9 hours with Mesh intercom or 14 hours with Bluetooth intercom when fully charged. Charging time of 1 hour or a quick 20 minutes for 3.5 hours of Mesh communication or 6 hours of Bluetooth intercom. Connects to Sena’s 50 Utility App for customization of a variety of settings.