Griffin Survivor Military Duty Case for iPad 2/3/4 - Blue/Green (GB35692-2) Independently tested and certified to meet conditions outlined in US Department of Defense MIL-STD-810. 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). Silicone cladding blocks vibration (Test: 18 hrs. at 20 to 2000 Hz). Includes multi-position work stand.