CLEAR CONVERSION With the 2W speaker and echo and background noise reduction, in addition to custom volume control, your calls will always be crystal clear, wherever you are! JUDGE WITHOUT DISTRACTIONS The speakerphone helps you drive safely, even using Siri or the Google Assistant to make calls, send messages or for navigation. Our CK11 also allows you to connect two phones at the same time and easily switch between music and calls! INTELLIGENT SENSOR The motion sensor allows the CK11 to turn off when the Bluetooth disconnects (you move away) and reignite as soon as the door of the machine opens. (ascent by car).