* Noise Canceling Bluetooth Headsets: truck driver headsets feature noise-canceling technology that eliminates up to 99. 6% of transmitting noise for crystal clear calls and music * All-Day Comfort: You need to be connected whether you are in or out of your office; With its balanced over the head design, memory foam padding, this Bluetooth headset with microphone enables you to wear all day in comfort * Long Battery Life: A sleek magnetic charging base is included with the M5 Bluetooth headset, which supports recharge the headset 12 to 15 times; Also, 2 hours charging can offer up to 18 hours continuous talking time and 200 hours standby time * Kindly Notice: Double press the MFB to mute Microphone and double press again to unmute Microphone; Mute function only supports on cell phones at present, we are working on this feature so that it would be used on PC in the future * Dual Device Connection: truck driver headset can connect with 2 Bluetooth devices at one time; You can switch the usage of the headset from one device to another easily; This feature is very practical if you have 2 smartphones or other devices