[Left Ear Version Bluetooth Earbud] SolidPin Invisible Wireless Bluetooth CSR 4.1 Earphone, Stereo Headphone with Mic for iPhone, Samsung Galaxy Note Edge, Android - Hands free Calls Headset - 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. Built-in 50 Mah polymer battery. Up to 4 hours of continuous talk time, 3.5 hours of music time. Can be connected with two smartphone at the same time.The wireless range up to 10 meters on open air. The headser will be connect automatically with a phone paired previously. 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.