The Jabra Clipper's cover is actually made of very elastic rubber, which allows many hacking possibiliites!

You'll need to peel the cover. Start by inserting a screwdriver from any of the sides until you hit the steel chassis. Pull it upwards, and do the rest of uncovering ritual with your fingers.

Clean up the remaining sealant from the sides of the case. Now there the waterproofing goes! Relax, nobody needs waterproofing. Well at least, not on the level of what was offered by Jabra Clipper!