Jabra EXTREME Bluetooth Headset[Retail Packing] Noise Blackout Extreme Technology with 2 Noise-Cancellation Microphones Crystal Clear Sound By Advanced Dsp Technology Intelligent Volume Control & Audio Shock Protection High Performance with Bluetooth 2.1 Edr & Esco Ultimate-fit Eargels and optional earhook provide all day comfort Multiuse allows you to connect to two devices at the same time Adjusts volume automatically 5 hours talk time and up to 10.5 days standby time Includes car charger