Note:
If you could not find "WTD01" on the mobile phone list, you could put the wireless bluetooth headphones in the case and pick them up again.
Reset to the original setting
Put the two earbuds back into the charging base, they will be in charging mode, press the multi-functional buttons of the two earbuds for around 15 seconds, and release the buttons when the indicators of the earbuds start to flash, then the earbud resetting is completed