Here is a popular school headphone that I don't think has changed in awhile. Why change something that does not need changing? Schools all over the country depend on Telex for sturdy, long-lasting headphones that can endure "kid testing". I still get surprised by the stories we hear from teachers about what kids can do (sometimes) to headphones. I never realized how popular chewing on the cords was...odds are I was that kid too.
Telex 591147000 610-44s Series Stereo Headphones
with 1/8" 3.5mm Permanent Cord

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Part number: 591147000
The best value in education and training headphones for children, the Telex 610 Series features comfort, quality, durability, versatility and affordability. These models are designed to withstand heavy use every day from students of all ages.
* Three models available
* Spring steel reinforced headband and ear cups return to shape
* Vinyl ear cushions are hypo-allergenic—no latex
* Speakers are impervious to sharp items such as pens or paper clips
* Available in mono and stereo versions
* 610 mono versions feature snap-fit plug-in for instant cord replacement
- Model: 610-44s
- Weight: 8 oz.
- Impedance(ohms) : 65
- Sensitivity at 1kHz 1mw input: 103dB
- Frequency Response: 50-12kHz
- Type: 5 ft 1.5m Single-cord w/straight 1/8” 3.5mm 3-conductor(stereo)plug
