FM Transmitter Car Charger Holder For iPhone iPod iTouch With 3.5mm Cable SpecificationColor: BlackTotal Height: About 26.5cmInterval: 0.1 MHZStability:!#!amp!*!plusmn;10ppm(-1\u2103-+55\u2103)Clutter !#!amp!*!amp; Harmonic:!#!amp!*!le;60dBEffective Range: About 5MWorking Voltage: DC 12VUSB Output Voltage: DC 5V 1A maxStereo Separation: 40dBFrequency Response:20Hz~16KHzAudio Distortion:!#!amp!*!le;0.1% (F=75KHz， f=1 KHz)SNR:!#!amp!*!ge;45 dB(1 KHz100%)Holder Dimension: 115 x 65.5 x 40mmAudio In: 3.5 StereoSupport Phone Size: Max. Width 7cm， Min. Width 5cmAudio Cable Length: 30cmPackage Size:30.5 x 9 x 7.5cm Note:1.Please avoid using local radio signal frequencies to ensure better sound quality.2.Please adjust the volume on the device or the car stereo to ensure proper volume levels.3.Please carefully check the electricity capacity of your equipment when using as a USB charger. Package Include:1x FM Transmitter Car Charger Holder (Phone Is NOT INCLUDE)1x 30cm Audio Cable1x Manual More detail: