GRDE Wireless Earbud Bluetooth Earpiece Smallest Invisible Earphone Secure Fit Bluetooth V4.2 plus EDR technology make it faster pairing and stable signal Featured with CVC 6.0 noise cancelling technology and built-in HD microphone Featured with CVC 6.0 noise cancelling technology and built-in HD microphone Featured with CVC 6.0 noise cancelling technology and built-in HD microphone Ultra small size