Black / Blue Survivor Case for iPod Touch (4th Gen) Extreme-duty case for iPod touch 4th gen. Independently tested and certified to meet conditions outlined in US Department of Defense MIL-STD-810 and UK Department of Defense Def-Stan 00-35 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)