US Army or Navy SDU-5/E Distress Marker Strobe Light

This distress light is in very good physical condition. It does have a battery, but I'm assuming the battery is dead? It also appears that the bulb may be burnt out (see picture).  But, it is possible that the bulb is fine and it's just a dead batter?  I have no way of testing it so it's being sold "AS IS" with no guarantees.  

The SDU-5/E strobe light was issued with various aircrew survival vests and life preservers. It was waterproof and produced an intermittent flash of light visible for beyond five miles. Army and Special Forces recon units also used the SDU-5/E at night to mark their position on the ground to circling planes. In such cases the strobe was placed inside the barrel of an M79 grenade launcher so that only those above the end of the barrel would see the flash, thus preventing the enemy from seeing the exact position of the team.

Please see the pictures and ask any questions.  Visit my ebay store for more great "Mississippi Finds"!

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About Me: I'm a stay at home mom with 4 kids and a supportive husband. I was born and raised in Alabama, but have lived in Mississippi for the past 23 years. I have been selling on ebay for 10+ years in order to make the extra money to pay for school trips, piano lessons, unexpected living expenses, etc.  When you buy from me, you will receive prompt, undivided attention, but most importantly, honest, trustworthy transactions!