Wireless Invisible Bluetooth Mini Earphone Earbud Headset Headphone Support Hands-free Calling For iPhone 6 Samsung Xiaomi Sony Lenovo HTC LG and Most Smartphone (Black) The Newest bluetooth headset with lightweight and compact portable design,We are committed to creating the most Mini bluetooth headsets,Simple and Stylish. Built-in HD and sensitivity microphone. Ideal for in-car calling or working use. Support A2DP , makes you can enjoy clear and natural sound when calling. Pairing Instruction: Press and hold the button until the voice states"Ready to pair" or the LED light flashing Red and Blue. Notice : The bluetooth is only for one ear . Not a pair. Due to the difference of people's ear, this earphone maybe not fits everyone. If the one you get is not perfect for you, please let us know. We will find a best way to help you. Built-in 50 mAh polymer battery. Up to 4 hours of continuous talk time, 3.5 hours of music time. Only need to charging 2 hours. Do not over 2 hours.