Jabra Extreme2 Universal Wireless Bluetooth Mono Headset Black Mono Bluetooth headset with optimized noise cancellation for reduced background noise and excellent call clarity under any environtment Noise Blackout 3.0 technology; HD Voice ready technology; spoken Caller ID, battery and connection status with Voice Guidance A2DP audio streaming capabilities; connects to two Bluetooth devices simultaneously Includes two ear hooks, two Ultimate Comfort Eargels, and car charger Up to 5.5 hours of talk time and 10.5 days of standby time Includes USB, car and wall chargers Multiuse - connect up to two active Bluetooth devices at the same time Transmits music, podcasts and GPS directions with A2DP technology Up to 5.5 hou