I took this backpacking with me for 4 months. From South Korean winter @ 10 below zero to Philippines spring 100+ degrees F. It survived salt water, getting dropped, rain, 100% humidity, sand, snow, getting frozen (literally ice frozen to it), and 7000+ft altitudes. Not to mention it was in a back pack getting shaken harder than a San Francisco martini the entire time.
Not to mention I plugged it into dozens of hostel and cafe computers with more OS's than I can count and it worked on EVERY one of them.
No data lost, no issues at all. I cant even begin to describe how much I would recommend this.