Black/Black Survivor for Kindle Fire HDX 7" (2013 Model) Military-Duty Case for Kindle Fire HDX 7" (2013) Independently tested to meet conditions outlined in US Department of Defense MIL-STD-810G Integral display shield deflects wind and rain (Test: up to 200 mm/hr for 1 hour) Rigid internal frame protects against shocks and drops (Test: drop on flat concrete surface from 6'/1.8 m) Sealed ports block blown sand and dust (Test: up to 18 m/sec for 1 hour)