HamiltonBuhl® Primo™ Stereo Headphones — Blue, 3.5 mm Stereo Plug, Classroom-Ready
Primo™ headphones deliver clear, reliable audio for K–12 learning with a rugged, school-tough build. Noise-reducing earcups help students focus, while a durable 5 ft Dura-Cord™ and 3.5 mm stereo (TRS) plug provide easy compatibility with classroom devices.
Key Features
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Built for schools: ABS plastic construction with Dura-Cord™ (chew-, kink-, knot-resistant, PVC-sleeved, braided).
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Comfortable & easy-clean: on-ear design with leatherette cushions for shared classroom use.
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Clear, focused listening: noise-reducing earcups help block ambient distractions.
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Universal audio: 3.5 mm stereo plug (TRS) — works with most carts, PCs, Macs, and tablets.
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Hygienic storage: includes a heavy-duty, write-on, reclosable bag (helps prevent the spread of lice).
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1-year warranty from HamiltonBuhl; Prop 65 compliant.
Compatibility at a Glance
| If your device has… |
This headphone can… |
Tip |
| 3.5 mm headphone (TRS) jack |
Play audio (no mic) |
No adapter needed |
| Single 3.5 mm headset (TRRS) jack |
Play audio (no mic) |
Need voice? Choose a TRRS/USB/USB-C headset
|
| USB-only device |
Use a USB audio adapter or pick a USB/USB-C headset |
See USB/USB-C headsets |
Specifications
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Design: Personal, on-ear; color: Blue
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Cushions: Leatherette (wipe-clean)
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Plug: 3.5 mm stereo, jacketed
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Cable: 5' Dura-Cord™ (chew-resistant, PVC-sleeved, braided nylon)
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Drivers: 30 mm
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Frequency response: 50 Hz – 20 kHz
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Impedance: 32 Ω
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Sensitivity: 105 dB ± 4 dB
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Included: heavy-duty, write-on, reclosable storage bag (helps prevent the spread of lice)
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Compliance: Prop 65
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Warranty: 1 year
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Model / SKU: PRM100 (Blue)
Ideal For
- Classrooms, testing labs, libraries, language & literacy apps
- Chromebook carts and shared learning spaces
Related Accessories
Buying for a school or district? We accept POs and offer volume pricing.
Request a quote.