Califone 35IR User Manual

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Wireless Stereo Headphone

Model 35IR-USB

1.Fully adjustable comfort strap wrapped with leatherette cushioning to fit all sizes

2.Recessed wiring resists prying fingers for classroom safety

3.USB connector plug for technology-orientedapplications

4.Infrared transmitter with 15’ line of sight range

5.Replaceable foam-filledear cushions

6.Volume control

7.On/off switch

8.Noise-reducingearcups lower ambient noise so volume does not need to be as high, as recommended by audiologists

9.Built-inwireless receivers(semi-circleconsidered ideal for group reception)

10.Rugged ABS plastic headband and earcups for durability

Includes a 3’ USB attachment cord to extend reach from the computer to the transmitter for enhanced IR transmission

Warranty for school use - unlike items purchased at a consumer electronics store whose warranty is voided if used in schools

Wireless headphones remove the tethered feeling to media players and computers. This wireless stereo headphone is ideal for assistive listening with shared computers in labs, libraries, classrooms and language learning situations. It can also be used as a teaching resource in ed tech applications. The detached USB connector transmits wireless audio for functional and convenient wireless learning.

“Project Intercept"

Please contact us immediately if you experience any issues or questions with your headphone. Our “Project Intercept" customer service program will quickly repair or replace items under warranty. Simply contact us via phone or email

Visit our website at to learn more about the complete line of Califone® audio products including: Wired and wireless headphones: Public address systems, wireless microphone systems, group listening centers, multimedia players and computer peripheral products.

We are proud of helping teachers enhance student understanding and achievements since 1947, with your satisfaction as our first priority.

This wireless headphone carries a one year warranty and service support available through authorized dealers nationwide.

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40mm Mylar Diaphragm


Neodymium Magnet


16 Ohms ± 15%

Frequency Response

20 Hz - 20kHz

Carrier Frequency

2.3 MHz



Receiving Diodes

4 Infrared


Noise-reducing,Rugged ABS plastic for


added durability


Black leatherette

Reception range

Up to four users within its 5’ line of sight


range from transmitter

Power Source

2 x 1.5 volt AAA alkaline batteries (included)


12 ounces, shipping weight 1 pound

3’ USB Attachment Cord

Included but not shown in picture

Mini CD Driver

Included but not shown in picture


1 year for school, business, church and


government uses

Safety Approval

CE rated safe for use in schools,


churches and government facilities

Product Compatibility

All media players with a USB plug

Califone® International Inc.800-722-0500

35IR-USB,January 2006