Feature:1.The Newest bluetooth headset with lightweight and compact portable design.Simple and Stylish.2.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.3.Built-in 50 Mah polymer battery. Up to 4 hours of continuous talk time、 3.5 hours of music time.4.Can connected with two smartphone at the same time.The wireless range up to 10 meters.5.Compatible with most Bluetooth-enabled devices. This will connect automatically with a phone paired previously. Bluetooth Version:V4.0+EDR handsfree/headset Wireless Frequency:2.402-2.480GHz Transmission power:Class2 Talk time:about 4 hours Music playing time:about 3 hours Stand by time:about 120 hours Charger time: 2 hours Effective range: 10 meters Weight:about 42gPackage Include: 1 x Earphone1 x instructions 1 x USB charging cable