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 statesReady 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.