How to factory reset / clear pairing history of the Clan K2?

1. Remove one earphone from the charging case.
   Long press the earphone for 8 seconds to power it off. You will hear "power off".Continue to long press the Multi-Function Button (MFB) for approximately 12 seconds until you hear a beep.
   Place the earphone back into the charging case
2. Repeat the same procedure for the other earphone.
3. Simultaneously take out both earphones.
   They will automatically pair and enter pairing mode.
   One earphone will flash red and blue alternately, while the other will flash blue every 3 seconds.

RESET successful! You can now use them.