eBay

DESCRIPTION
ACTIVE NOISE CANCELLATION 4th Generation with Active Noise Cancellation help reduce outside noise before it reaches your ears, so you can immerse yourself in what you’re listening to.
REBUILT FOR COMFORT 4th Generation have been redesigned for exceptional all-day comfort and greater stability. With a refined contour, shorter stem, and quick-press controls for music or calls.
REDESIGNED CASE The Charging Case is the smallest in the industry with wireless charging. USB-C Charge Cable, or Qi-certified charger.

Product Description:

Please you try it according to below procedure:

Step 1: Turn on the phone’s Bluetooth.

Step 2: Open the earbuds charging case cover（Don't take out the headphones if the pairing is unsucessful）.

Step 3: The connection interface will show on the phone.

Step 4: Tap twice in a row with your fingertips ,then wait for the phone screen to show that the connection is successful, then take out the headphones and use it.