This listing is for some vintage, original Sony DR-S3 Dynamic Stereo Headphones. 
  
The listing includes the DR-S3 headphones seen in the photos only. 

These arrtractive, beautiful sounding stereo headphones were released in 1979 (some say late '78). The first I found of them was in a '79 German Sony catalogue (last photo). They were manufactured side by side with the first Walkman cassette players. In 1987, the S3s, (the actual model number is: DR-S 3), were forever enshrined in Sony history as they were chosen to accompany the WM-DD100 Boodoo Khan Walkman. The Dr-S3s were remamed the DR-S100 and received the Boodoo Khan stamp.

I referenced "The Walkman Archive" Website, and also audioidiots.com where I found the 1979 ad in the last image..

THE SPECS:

Dynamic type sealed type
Diaphragm: 70 mm Cone type
Impedance :10 Ω
Frequency Response: 20Hz to 20,000Hz
Maximum input: 1000mW
Sensitivity: 102 dB / mW
Cord: 3m curl cord
Weight 364g Total (Exact Weight of DR-S3s in listing)
Production Run: 1979-1982

The headphones were thoroughly tested. They work perfectly, and sound fantastic. They are in excellent cosmetic condition. There are no cracks, breaks, or any other damage to the headphones. I was able to detect some light scratching/scuffing/marking with a bright light and a magnifying glass, but they are very hard to see without magnification. The adjustable leather headband works perfectly, and is in great shape. The cord is perfectly coiled with no stretching or other damage. The earpads are also in excellent condition. The headphones use a 1/4 inch plug.

The photos best represent the condition of the DR-S3 Headphones. The flash was used in photo 1.

Reasonably priced for a collector that will appreciate them.    

I take pride in super fast shipping for all my valued customers.    

Thank you for looking!!  

The price includes the packaging/boxes (some are recycled) to safely ship, the time it takes to test every single feature and function (unless I'm unable which will be specified), and the sometime use of technicians. This ensures that I can accurately describe each item and deliver it safely, so you know exactly what you are getting.