You can be controlled by voice and receive calls， say yes- answer， say no- hang up，Made of metal.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 Office use. Support A2DP ， makes you can enjoy clear and natural sound when calling.Built-in 50mAh polymer battery. Up to 4 hours of continuous talk time， 3 hours of music time. Can connected with two smartphone at the same time， the wireless range up to 10 meters.Pairing Instruction: Press the power button of the headset for about 5 SECONDS or LONGER until you see the Blue & Red Light blinks alternately or Hear a beat， then you could connect it with your cellphone.Attentions: Only include one earbud; Only need to charging 2 hours， do not over 2 hoursSpecification: Bluetooth Version: V4.0+EDR 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 Effective range: 10 meters Weight:about 42g Features: Handsfree headset Light weight， portable， easy to carry Ultra mini design ，stealth，popular and beautiful Enjoy High quality music: Bluetooth 4.0 Voice broadcast when you receive a call One button to answer call， built-in microphone Play the music in your phone (after Bluetooth pairing) Can be connected with 2 bluetooth devices at the same time Can be compatible with various bluetooth enabled devices such as :mobile phones，ipad，PC，etc. Package Includes: 1 x Mini Bluetooth Earphone 1 x USB cable