The WM-4

The WM-4 came out in 1983 and was designed to be the budget version of earlier, more-expensive models. It was one of the loudest Walkmans because it used four AA batteries rather than the traditional two.

Top 10 Billboard songs of 1983:
1. "Every Breath You Take," The Police
2. "Billie Jean," Michael Jackson
3. (From "Flashdance...What a Feeling," Irene Cara
4. "Down Under," Men at Work
5. "Beat It," Michael Jackson
6. "Total Eclipse of the Heart," Bonnie Tyler
7. "Maneater," Daryl Hall and John Oates
8. "Baby Come to Me," Patti Austin and James Ingram
9. "Maniac," Michael Sembello
10. "Sweet Dreams (Are Made of This)," Eurythmics