In 1981, Sony pursued a strategy of achieving both miniaturization of the device's casing and maintaining sound quality. The design was changed to prioritize a balance between portability and practicality.
WM-2
The WM-2 is a playback-only Walkman. It features a tape selector and uses AA batteries. It is an early playback-only device that supports switching between tape types.
WM-3
The WM-3 is a playback-only Walkman. It features a tape selector and uses AA batteries. It is an early playback-only device that supports switching between tape types.
WM-3EX
The WM-3EX is a playback-only Walkman. It features a tape selector and uses AA batteries. It is an early playback-only model that supports switching between tape types.
In 1981, it was demonstrated that continuous improvement was possible while maintaining the basic structure. This policy was reflected in the enhancement of features and the increase in the number of products in subsequent models.