<ul><li>Feature:-The Newest bluetooth headset with lightweight and compact portable design.Simple and Stylish.-Built-in HD and sensitivity microphone. Idea for in-car calling or working use. Support A2DP , makes you 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 connected with two smartphone at the same time.The wireless range up to 10 meters.-Compatible with most Bluetooth-enabled devices. This will connect automatically with a phone paired previously</li></ul>