SECUMAR 10-HK Pilot Survival Vest and Life Preserver, flown by the German Air Force and known to be used in partially modified version by the British Royal Air force in their Lynx Helicopters, also used by the Royal Danish Air Force, Swiss and Italian Air Force, one size fits all, the item is in very good condition as you can see from the pictures, no further contents available, vest is comparable with the Secumar 10 HL, the 10 HK is normally equipped with a manual release, I have installed an automatic release here, a manual release is included, a original life jacket antenna for the MR 506 survival radio is include ,this item is sold as a Collection/Display item ONLY, note that all our items are pure collector items or display items. The items are not tested for real use and have no aeronautical exams or clearances. Use is at your own risk !