These mono headphones are longstanding teacher favorites (and student-tested) for literacy and language learning activities, computer-related classes classrooms and libraries.
Safety features begin with slotted earcup baffles to protect the internal speakers against accidental perforation by sharp objects such as an unfolded paper clip or scissors. Noise-reducing earcups help hearing safety by resting around students' ears (not in them) to provide maximum protection against external noise, minimizing distractions so students won't increase the volume to hear the content. The rugged ABS plastic construction won't shatter and withstand the rigors of daily use.
Size - 40mm diameter (1.6 inches)
Diaphragm - Mylar
Magnet - Ferrite
Impedance - 600 Ohms each side
Frequency Response - 40 H - 18 kHz
Sound Pressure Level - 93 db +/- 3 dB
Power Capacity - 20 milliwatts RMS, 150 milliwatts peak
Distortion - 5% approximately
Volume Control - Continuously variable
Cord - 6' straight replaceable cord
Plug - 1/4" Nickel plated for enhanced connection
Headband & Ear Pad - PVC (Washable)
Earcups - Noise-reducing, ABS plastic for durability
Weight - 10 oz.