Insten Universal All Channel FM Transmitter w/USB Port, Black For Apple iPhone 7/7 Plus Broadcast music from your iPod, , MP3 or CD player, and even portable DVD player with this all channel universal FM transmitter. Transmits stereo quality sound from your portable music player to your car/home FM radio. All frequency tuning allows endless selection of radio frequencies from 88.1 to 107.9 mhz with an increment of 0.1 mhz. Just tune your car radio into any unused FM channel. Then adjust the FM Transmitter to the same radio frequency. Plug FM Transmitter's into any 3.5 mm output socket and then it's done. Powered by vehicle cigarette lighter adapter or 2 x AAA battery. Frequency range: 88.1 - 107.9 MHz. For best sound performance, please set your MP3 player's volume level to MEDIUM. Then use your car stereo's volume control to adjust the output level. Operating Range: up to 16.4 feet / 5 meters. Optimal distance - 10 feet / 3 meters. Easy to read LCD frequency display. Fits standard USB connections. Color: Black. MP3 Player and AAA battery not included. Compatible With SanDisk: Sansa Clip Clip 1/2/4GB/Connect 4GB/E200/e250/e260/e270/e280/e250R/e260R/e270R/e280R/Fuze 2/4/8GB/View 8/16/32GB;iPad 2 16GB/32GB/64GB/BlackBerry PlayBook/Motorola XOOM / iPhone 4 AT&T / iPhone 4 Verizon.