★PORTABLE FM TRANSMITTER-- FCC Certified: FCC ID: 2ASVO05B7CT200. Transmitter complies with FCC Part 15 and users do not need personal license to use. Just set the channel you want in the middle of 87.5-108.0MHz, and the sound will be transmitted. | ★LONG RANGE FM TRANSMITTER-- Built-in PLL advanced modulation system, which makes part 15 FM transmitter receiver work stably. You can obtain a good signal & clear stereo sound within 1000ft, which is good enough to provide drive-in church service. | ★SUPERIOR HEAT DISSIPATION & DURABLE ANTENNA-- With a high-quality aluminum alloy material shell & heat sink, light & durable. The small FM transmitter will not be hot when used for a long time, which also delays the service life of the machine. | ★EASY TO USE-- This low power FM transmitter has a compact structure, generous appearance, unpack, and effortlessly set up within 5 minutes. Compared to others, we additionally provide with you an electret microphone, is more convenient to use. | ★WILDLY APPLICATION-- This FM stereo broadcast ideal for parking lot church, car theater, Christmas light show, park or create your own radio station. It can also be connected to a microphone and use on campus, supermarket, conference speech, etc.