TREBLAB X3 Pro - Proper Earbud Fit

End a call Press the MFB button on either earbud.
Reject a call Press and hold the MFB button on either
earbud for 1 second.
Voice assistant Press the MFB button twice on either
activation earbud while connected to a smart device.
HOW TO ENSURE A PROPER FIT
Ear-tips in different sizes
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Using appropriate size ear-tips is critical to isolate external
noise and achieve a snug, secure fit. It is common for a user
to have two different sized ear canals, so try on one ear-tip
at a time to find the best fit for each ear.