Love life, love music get rid of the wires when exercising this earphone is Bluetooth v4.0 + edr, fully backward compatible with most Bluetooth version device (v4.0, v3.0 + edr, v2.1 + edr, v2.0 + edr, v1.2, v1.0 etc.). Just make sure your phone (or other device) is Bluetooth device pairing instructions 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 stream music/video/audio playing want to listen to a movie playing on your phone or tablet? Want to watch video in YouTube? Want stream music from your Pandora? Mini4.0 build with Bluetooth profile a2dp&avrcp, so this ear set will meet all you needs perfect for stealth listening/watching at work great little earphone to listening music or watching movie while at work, still be able to concentrate and carry on conversations with people at the same time specifications chipset: Csr chipset Bluetooth version: V4.0 + edr Bluetooth profile: A2dp, avrcp, hsp, hfp stream multimedia: Music, audio, video, podcasts, GPS usage time: 3 to 4 hours (base on the volume level) standby time: Up to 80 hours charger time: 2 hours working distance range: 33ft frequency range: 2.4ghz to 2.480ghz battery: Li-on battery IOS battery displays: Yes siri: Yes.
- Built-in HD and sensitivity microphone: Idea for in car calling or working use, perfect for stealth listening or watching at work
- Built-in 50 mah polymer battery, up to 4 hours of continuous talk time, 3.5 hours of music time, only need to charging 2 hours, do not over 2 hours
- Pairing instruction: Press and hold the button until the voice states “ready to pair” or the LED light flashing red and blue
- Notice : The Bluetooth is only for one ear, not a pair, due to the difference of people’s ear, this earphone maybe not fits everyone