Key shelf life material is the lithium battery
NSN 5960-01-544-1273
NSN 5905-01-446-0196
NSN 2925-00-124-5465
NSN 5996-00-908-6056
NSN 6240-00-910-3297
NSN 5996-01-352-7105
NSN 6145-01-278-2102
NSN 5999-00-578-5658
NSN 5990-00-097-7642
NSN 6135-01-359-0051
NSN 6240-01-598-8177
NSN 5915-00-252-1876