Hamilton W900-Multi Transmitter - Transmits high quality audio via FM to W901 series headphones within a 300 foot range. Connects to any analog audio source through a 1/8" stereo mini jack.

Switchable between 4 frequencies:

Blue - 72.500 MHz
Yellow - 72.100 MHz
Green - 72.900 MHz
Orange - 74.700 MHz

Product Features:

Superb sound without cords or wires - no interference from other electronic equipment
Operates on dedicated channels
Listen with an infinite number of headphones on one frequency with one transmitter
One (1) year warranty.