Uploaded July 2015 | Updated September 2026, 1 hour ago
Now that smartphones are so popular, it’s hard to think of a world without them. But I remember a time when bulky portable music players were all the rage. I had a Sony Walkman myself as a kid; it was one of my prized possessions. No one uses that kind of devices anymore, or so we think. Even though Sony’s portable audio players don’t hold much market share, there is a special group of people who still use and love them – American prisoners.
An AM/FM radio that was specially built 15 years ago by the Japanese company for this market is still unmatched by any rival brand. The Sony SRF-39FP (Federal Prison) is so popular with inmates, it has been dubbed the ‘iPod of Prison’. Why is it so special? Let’s find out.
Now that smartphones are so popular, it’s hard to think of a world without them. But I remember a time when bulky portable music players were all the rage. I had a Sony Walkman myself as a kid; it was one of my prized possessions. No one uses that kind of devices anymore, or so we think. Even though Sony’s portable audio players don’t hold much market share, there is a special group of people who still use and love them – American prisoners.
An AM/FM radio that was specially built 15 years ago by the Japanese company for this market is still unmatched by any rival brand. The Sony SRF-39FP (Federal Prison) is so popular with inmates, it has been dubbed the ‘iPod of Prison’. Why is it so special? Let’s find out.
