Sport Magnetic Buckle Wire Control Wireless Bluetooth 4.1 Headphone Earphone to you. One of the most remarkable features of this earphone is the built-in pendant, which allows you to easily get Bluetooth working state. When the red & blue light is shown, it means pairing status; the blue light means successful connection. For this earphone, it is made with premium materials and delicate workmanship, with guaranteed quality and comfort. It is quite ideal for running, walking or doing sports etc Great stereo sound quality Braided wire material, soft and comfortable, hard to wind and easy to store Magnetic design makes the earphone unique In-ear style can better reduce the noise and improve the sound quality The built-in pendant indicates Bluetooth connection & pairing status.