Miscellaneous Electronics Mx6 Wireless Bluetooth Over Head Headset Mt7000 MX6 NOISE CANCELLING TECHNOLOGY: MX10 noise cancelling technology eliminates 6X the external noise for crystal clear conversations EXTRA COMFORT: Durable design with pivoting cushioned ear cup for maximum comfort LONG TALK TIME AND RANGE: Up to 16 hours of continuous wireless hands-free talk time with up to 250 hours of stand-by time and 66 feet working range