Specifications: Hifast wireless car audio FM transmitter With USB/1394 power adapter Model: Hfm6f Introduction: This device modulates the sound from MP3, ipod, MD, CD, laptop, DVD player or any music player that has earphone socket into stereo FM signal and transmits it wirelessly to your car stereo system. With the advanced feature of 7 selectable transmission frequencies, now you can easily avoid conflicting with local FM radio signals. By adopting digital pll and rf amplifying techniques, this FM transmitter can achieve good de-interference ability and ensures stable operation at a range up to 100 feet (30 meters). An USB and 1394/firewire power adapter is integrated in this device. You can charge your music players, digital cameras, mobile phones and other portable devices that rely on USB or 1394/firewire for power in your car during a road trip. Enjoy your favorite music unlimitedly while driving without making any changes to your car. Features & specifications: FM transmitter, USB & 1394/firewire power adapter 3-in-1 Links portable music players to your car stereo without cables or wires Powered by standard 12v car cigarette lighter, no battery or AC adapter required Switch mode dc-dc regulator results in high efficiency/low heating 7 selectable frequencies:87.7,87.9,88.1,88.3,88.5,88.7 and 88.9mhz Transmission range up to 100 feet (30 meters) Frequency response:20hz - 15 khz Low power consumption: simply plug the device into the cigarette lighter in your car and the earphone socket on your music player; 2> play music with your music player, start the car FM radio and tune to the same frequency as the device selected and adjust the volume as you like. 3> use the USB or 1394/firewire charger to recharge your portable devices when needed. Product of hifast international group Toronto, ontario, Canada HiFast Other Price Terms: FOB  Toronto Payment Terms: L/C,D/A,T/T,M/T,D/D,CASH,D/P Certification(s): FM Transmitter & USB/1394 ChargerSupply Ability: 100000