Transmission range of 20 meters
Music， voice control， voice control， call function， NFC function， multi point connection
Channel stereo
Use earplugs whether bilateral unilateral hands-free
100% brand new and high quality.
specially designed for right ear， only suitable for right ear wearing
Invisible stealth earphone， suitable for sports and driving use.
Long time press earphone button more than 5 seconds.
You will see red and blue light flashing alternately.
Then connect your Bluetooth， and use earphone.