Hamilton Buhl HA7 SchoolMate Deluxe Headphones 3.5mm Gray

Classroom stereo headphones

The Hamilton Buhl HA7 SchoolMate Deluxe headphones are built for daily classroom use with a closed-back, over-ear design that isolates sound during lessons and testing. They connect through a 3.5 mm TRRS stereo plug and 40 mm drivers deliver a 50 Hz to 20 kHz frequency response at 32 ohms impedance and 105 dB sensitivity. The adjustable headband and leatherette cushions fit a range of head sizes.

Chew-resistant cord and anti-lice bag

A 5-foot Dura-Cord uses PVC-jacketed braided nylon to resist chewing, kinking and knotting during heavy student handling. Leatherette ear cushions are replaceable when worn. The included heavy-duty reclosable bag is moisture-resistant and write-on; sealing headphones inside kills lice in 24 to 48 hours without chemicals, helping prevent cross-contamination between users.

Check device jack and plug fit

Verify that each device provides a 3.5 mm TRRS combo jack for both audio and microphone signals; separate headphone and mic ports will need an adapter not supplied. The 180-degree angled plug reduces strain but may still interfere with tightly spaced ports or protective cases. Confirm the 5-foot cable reaches workstations without creating trip hazards in your room layout.