NEW Bluetooth Headphone 4.1 with Microphone for Wireless Connection to SmartPhone & Computers, Handsfree Calling with Stereo Sound & Noise Cancellation, Sweatproof & Perfect for Gym Exercise & Running extremely light weight and sweatproof and designed well for multipurpose activities such as walking, commuting, exercising or running by fitting perfectly well in ear using soft and light silicon fitters, Bluetooth 4.1 technology for optimum automatic power saving and management on both the headphone and the device it is connected to and a strong signal for hasslefree cordless connection with your device for up to 30 feet (10 meters) without any interruption with high fidelity stereo sound and easy to use controls for volume and track changes built on the earpiece Clear and crisp sound and bass for optimum audio experience CVC 6.0 noice cancellation for an isolated, clear and high definition sound with a builtin microphone for phone calls, skype, google hangout and other means of voice and videocall communication with voice notification