The Hex is designed to be IP54 rated. This standard states that:
Water splashing against the enclosure from any direction shall have no harmful effect
What this means is that it will be resistant to sweat during normal use, OK to use in rain, however for it is recommend to avoiding showering with the Hex on, and definitely not submerging it. We have designed the Hex to a higher standard than this, but are still working through this certification.