HALLICRAFTERS SKY CHAMPION MODEL S-20-R HAMM RADIO ONLY TESTING DONE IS POWER AND WE LISTENED TO NOISE FROM SPEAKER I DO NOT KNOW HOW TO USE IT OTHERWISE AND IS UNTESTED APPROX 9" X 9" X 18.5" PRETTY GOOD COSMETIC CONDITION BUT IN AS FOUND CONDITION AND COULD CLEAN UP BETTER Vintage condition. Turns on with lights not tested past that buying as is. Missing bottom cover