Califone HIR-KT4 4-Person IR Stereo/Mono Wireless Headphones with Transmitter, 20ft Transmission Range, 2.3 & 2.8MHz Stereo Frequency

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About the Califone HIR-KT4

The Califone HIR-KT4 4-Person IR Stereo/Mono Headphones with Transmitter can be used for monaural language-based activities or with the flip of a switch, also for stereo computer-based programs. The wireless headphone receives the audio signal from not only a classroom computer (Mac or Windows compatible) with the USB transmitter and extender connected, but also from Califone's two media players equipped with a built-in infrared transmitter the Infrared Music Maker Plus (2395IR) and the Infrared Cassette Player (3432IR).

This headphones have an adjustable headband with ambient noise-reducing earcups to help block out external distractions and keep students on task. There is no limit to the number of listeners so long as they're within the 20' transmission range with a clear line of sight between the headphone and transmitter.

Califone HIR-KT4 Includes

  • Califone HIR-HP1 Infrared Headphone
  • HIR-TX1 USB Transmitter with 10" Semi-Rigid USB Extender
  • Califone 2 Years Warranty

Califone HIR-KT4 Features

  • Power on/off switch, stereo/mono switch, volume control

Califone HIR-KT4 Specifications

Operating System Windows 2000/XP/Vista/Windows 7 32-bit & 64-bit, Mac compatible
Infrared Frequency Mono: 2.3MHz / Stereo: 2.3 & 2.8MHz
Power Requirements 2 "AAA" size alkaline batteries
Range 20 feet (must have line-of-sight)
Battery Usage Time > 8 hours (depends on battery and usage)
Automatic Sleep Mode If no audio is played through it for 2 minutes
Construction ABS plastic
Dimensions 7x8x3" / 17.78x20.32x7.62 cm
Weight 3 lbs / 1.36 kg
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