In an Emergency Situation,I would Try my Best to,Get the heck out of the water,ASAP!Since I'm not a Fighter Pilot,I don't see Myself Packing an SD card in my Doug Ritter-PSK!Everything in the Doug Ritter-PSK,Is designed to get wet,then dried off & Function normally,of which I have tested Many Times,With No Problems Whatsoever!To be Fair to All,Did you Test the Content's for Validity?I didn't see a Disclaimer,Are you Promoting Aqua-Pac? I Have No Affiliation with the above mentioned Products!