Features: <br /> <br />t100% brand new and high quality. <br /> <br />tspecially designed for right ear・ only suitable for right ear wearing <br /> <br />tInvisible stealth earphone・ suitable for sports and driving use. <br /> <br />tLong time press earphone button more than 5 seconds. <br /> <br />tYou will see red and blue light flashing alternately. <br /> <br />tThen connect your Bluetooth・ and use earphone.  <br /> <br />t  <br /> <br />tSuit: for all Bluetooth device <br /> <br />tTechnology: Bluetooth 4.1 <br /> <br />tRadio frequency: 2.402-2.480GHz <br /> <br />tAudio output: 35mW・