This set is a SECUMAR URK 80 Submarine escape Life Preserver jacket  : NSN: 4220-12-174-7876 , jacket with all you can see on the photos, jacket in use with German Navy Submarine, the submarine safety vest URK 80 is equipped with a large capacity air tank , a cap with light and sea water battery, jacket is a demo-display jacket in very good condione,this jacket is very rare and hard to find , OFFER IS FOR DISPLAY ONLY , set is no demilitarisiert but only for display ! COLLECTORS ITEM!NOT FOR USE!!!