This was one of Sony’s popular small boomboxes in the mid to late 80’s It is the Sony CFS-900. It came in both cream white and black color schemes and was a pretty basic single cassette box. It featured auto-reverse, a telescoping antenna and AM/FM radio bands. It measures 16.75 x 5.5 x 3.5 and weighs in a around 4 pounds.
This is a smaller boombox so it’s not highly sought after but they are nice examples of the smaller sleek Sony units. In good working condition they sell for about $50-75.