AM Stereo

Initially adopted by many commercial AM broadcasters in the mid to late 1980s, AM stereo broadcasting soon began to decline due to a lack of receivers (most "AM/FM stereo" radios only receive FM in stereo), a growing exodus of music broadcasters to FM, concentration of ownership of the few remaining stations in the hands of large corporations and the removal of music from AM stations in favour of news/talk or sports broadcasting. By 2001, most of the former AM stereo broadcasters were no longer stereo or had left the AM band entirely. (Via Wiki)

Dolby C

Dolby C noise reduction was a very common feature on mid to high-end cassette decks, not on portable devices. It further reduces background hiss, beyond Dolby B levels. To playback a Dolby C encoded recording, you need a device that can decode it for the best audio quality.

Girly

Colorful designs, usually on lower cost Walkmans, not geared towards audiophiles.

Glamour Boys

Glorious, glamorous, luxurious, and especially golden walkmans. The glamour boys have it all under control.

Good design award winner

GOOD DESIGN AWARD An only comprehensive design evaluation and promotion mechanism in Japan. Together with G Mark, it has been recognized by a wide range of people for more than 60 years, and has continued its activities to make people's lives and society better through design. Objects are screened on 4 perspectives: human, industrial, social perspective and time. All images from award winning Walkmans on the GOOD DESIGN AWARDS site, remain property of gooddesignawards.org / g-mark.org.

I'am so blockhead!

A little bit too rectangles?

IF Design award

For over 70 years, starting from 1953, iF Design is known for outstanding design and social engagement. (ifdesign.com)

Louder

Spread the music! These were equipped with a built-in speaker! Alternatively, they came with a speaker or set of them as part of the original deal.

Open else

Walkmans which doors opening differently, unusually.

Pioneers

They showed the path to everyone.

Retractable headphones

Walkmans with built-in, retractable headphones, no need to separately carry some. Although.. nowadays you might find the audio output below average :)

Stretchy

Look, I can stretch!

Transparent

Just to be clear, do you see me? Transparent models.

Wireless

Wireless headphones were all the rage! Keep the Walkman in your pocket or bag, no cables to snag. Most models are from the Sony Wireless series, while others might by produced by Sony for Casio for instance.