The SV-301R is a 3-band receiver features high-fidelity stereo reception, 3 frequency ranges all in one receiver FM, 900MHz and 2.4GHz. Digital display tuning and auto power on/off with headphone insertion. Headphone jack replacement indicator light. RJ45 power input jack. Easy installation on stationary fitness equipment. Fully adjustable mount to any angle. Replaceable 1/8" headphone jack module (without removing unit from equipment). Compatible with other wireless entertainment systems. FCC approved (all 3 bands). 1 year limited warranty.