[Product Name]
SONY WALKMAN – A Classic Model: WM-EX677 (Blue)
The final model of cassette Walkman manufactured in Japan.
Shows almost no signs of use; condition is near-mint (though the external battery case shows slight signs of handling).
[Product Operation: Serviced and Functional]
Fully serviced and tested using an external AA battery case; operation with a gum-type rechargeable battery is also flawless.
No traces of battery leakage; battery terminals are pristine and shiny.
The critical pinch roller has been replaced with a brand-new one; it is free from indentations or slick/glossy wear and performs optimally.
Playback sound is clear and free of excessive noise, delivering excellent audio quality.
Playback, stop, fast-forward, rewind, and reverse functions have undergone extensive operational testing.
Forward and reverse playback speeds are stable and normal; speed variance has been measured and confirmed to be within acceptable limits.
No audible pitch instability; wow and flutter measurements are excellent.
All control buttons and switches on the unit have been tested.
Volume adjustment is smooth, with no static or crackling noise.
The genuine remote control and earphone audio output function perfectly.
Equipped with a standard 3.5mm headphone jack, allowing you to use commercially available earphones. Please refrain from using tapes longer than 90 minutes, tapes in poor condition (heavily degraded), or low-quality tapes of overseas manufacture, as these may cause pitch instability, playback failure, or equipment malfunction.
【Maintenance Details】
Exterior and accessories cleaned, sanitized, and polished using alcohol wipes.
Drive belts replaced with high-quality, durable parts (no low-quality generic parts used).
Flywheel V-belt groove cleaned and precision-polished.
Pinch roller replaced with a new unit.
Capstan shaft cleaned.
Silicone grease reapplied to gear rotation points.
Tape head precision-polished to a mirror finish and cleaned.
Oxidation removed from metal contact points to improve electrical conductivity.
Demagnetized using a TEAC E-3 head demagnetizer.
Wow and flutter measured and speed adjusted using an ABEX 3kHz -10dB Flutter & Speed Test Tape.
Take-up torque measured during playback.
—etc.—
【Included Accessories】
Includes only the items shown in the photos.
Please note that batteries and earphones are treated as consumables; even if included, they are not covered by the operational warranty.