ELANE Mini Wireless Bluetooth Stereo Headphone with Microphone Earphone Headset Earpiece &ndash; Pink Built in HD and sensitivity microphone, no matter where you are: On the road, in the office or driving 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 Pairing instruction: Press the power button of the headset for about 5 seconds or longer until you see the blue & red light blinks alternately Pairing two phones and answer calls from either one Compatible withiPhone6/plus/5s/5/4s/4, iPod/I touch, Samsung s6/s5/s4/s3/note4/note3, HTC/LG/Bluetooth headset,mp3/mp4,android phone, windows phone