Up for sale is a meticulously restored Sony WM-F404, a flagship model from Sony's golden era of portable audio. The F404 is a standout in the Walkman lineage because it offers high-fidelity playback alongside stereo recording and a sensitive AM/FM tuner. It was the Top-of-the-Line model, priced at JPY 39,000.

Finding an F404 is rare; finding one that has been professionally opened, cleaned, and calibrated is nearly impossible. This unit is ready to provide the warm, nostalgic sound of analog tape with modern reliability.

Professional Service Details: Vintage Walkmans are notorious for belt failure and speed drift. This unit has undergone a comprehensive technical overhaul:

Drive System: Original perished belts replaced with high-quality, precision-ground replacements for stable playback.

Mechanical Restoration: The delicate tape transport mechanism has been cleaned of old, hardened grease and relubricated with watch-grade synthetics.

Electronics & Head: Tape heads and pinch rollers have been deep-cleaned and demagnetized.

Calibration: The motor speed has been professionally calibrated to 3000Hz using a specialized test tape to ensure your music plays at the correct pitch.

Tuner & Recording: Both the AM/FM radio and the recording functions have been bench-tested and are performing flawlessly.