Dealstock Universal Mini Wireless Bluetooth In-Ear Earphone Headphone Headset 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. Perfect for Stealth Listening or watching at work.ect for Stealth Listening or watching at work. Built-in 50mAh 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. Pairing Instruction: Press the power button of the headset for about 8 SECONDS or LONGER until you see the Blue & Red Light blinks alternately or Hear a beat.