Just to add my two cents to this. I am on my third pair of these as I have had to claim warranty under their lifetime sweat proof claim. On my third unit I demanded they apply a coating of the liquepel treatment. If this pair fails, I am done with Jaybird.
The other bluetooth earbuds I saw on Massdrop seem to have liquepel applied by default + they feature Apt-X + they are cheaper.
Something to consider.
Darth_Faded"BlueBuds X feature Liquipel Sweat Repellant Nano Technology.
A super hydrophobic process that provides the BlueBuds X with
added protection from exposure to sweat and the elements."
Taken from their website.
YakovThat was definitely not the case up until recently because prior to my last replacement, previous units came with a booklet trying to upsell Liquipel to add an extra level of protection. I noticed the last unit came with a similar marketing note saying that although it features a Liquipel coating they don't recommend immersing... bla bla bla.
I was simply under the impression that my replacement unit featured this, I was at no point told by Jaybird customer service that they are now all coming with Liquipel coating applied. Bastards made me think I was getting a special service!