Walkman: A História Ilustrada (1979–2004) A timeline of Sony’s cassette Walkman models from 1979 to 2004 - EP.24 - 1991: SONY WALKMAN WM-WX88

 

Most splashproof Walkman belonged to the bright, rugged Sports line. In 1991, Sony took a

 different approach with the WM-WX88. It added a waterproof wireless receiver and splashproof

 earphones. A wireless remote enabled hands-free use around water. Battery life was limited to

 about two hours, offset by a quick charger that restored roughly half the charge in ten minutes.