The Sony CFS-920 was part of Sony’s sports boombox line introduced in the mid 80’s. The boomboxes were AM/FM cassette and were very durable, water resistant and had rubber fittings at the seams.
The Sony CFS-920 used 6 D size batteries and featured a built-in microphone, headphone jack, carrying handle and easy touch buttons. It’s dimensions are 17″ long, 5 1/2″ tall.