KING KNS 81 NAVIGATIONAL COMPUTER P/N066-4010-10 S/N 4708 MOD 1,2,3,5,6,7 PWR: 14/28 VDC 1.3/0.6A. THIS UNIT HAS BEEN BENCH TESTED GOOD AND COMES WITH A NEW YELLOW TAG, FAA 8130 AIRWORTHYNESS FORM, 30 DAY WARRANTY, TRAY AND CONNECTOR INCLUDED, THANKS FOR LOOKING.