Sony CFS-904 Sports
The CFS-904 and 905 boombox were part of Sony's "Sports" line, with water-resistant rubber gaskets under the buttons. It also has the "Mega Bass" button that became Sony's hallmark in the late 80's.
Output: Minimum of 1.3 watts per channel from 150 to 10,000 Hz, at no more than 10% THD.
Dimensions: 470 x 150 x 154 mm
10 cm speakers
Frequency response 80 - 10,000 Hz