WWII-era record player that could be wound up and required no electricity, allowing soldiers to list
See an overview and demonstration of playing a vintage U.S. Special Services record player. This kind of antique gramophone was used in the field in WWII, and is powered by winding a spring -- no batteries or electricity. The sound is picked-up by the needle, and vibrations are amplified from the reproducer through an audio horn that curves around underneath the turntable. The vintage sound is loud, and it instantly transports you to days gone by.