Net Weight: 42g.

FM Transmitter Size (about): 4.8cm x 2.7cm x 1.0cm.
Car Charger Size (about): 6.8cm x 3.0cm x 3.0cm.
High fidelity stereo.
Compact and stylish!
200 channels available (FM87.5~108.0).
LCD shows channels.
Power supply by iPhone (iPod, Touch).
With car charger to the unit and iPod, iPhone , Touch.
Transmits stereo quality sound from your portable music player to your car FM radio.
Directly select next/last song and adjust the volume by pressing key on the unit.
If you want to listen to digital music simply place your iPod or MP3 player onto the holder, tune to any FM87.5~108.0 MHz station and enjoy crisp, clear audio.
Suitable for iPhone, iPod, Touch.
Frequency range: FM87.5~108.0 MHz.
Car charger Output: 5V 800mA.
Compatible With Apple: iPod Classic 160GB, 80GB, 120GB \ iPod 4th Gen. 20GB (Color Display), 30GB (Color Display), 60GB (Color Display), 40GB (Photo), 60GB. (Photo), U2 Special Edition, 20GB, 40GB \ iPhone 1st Gen. 16GB, 4GB, 8GB \ iPhone 3G 16GB, 8GB \ iPod Touch 1st Gen. 16GB, 32GB, 8GB \ iPod Touch 2nd Gen. 16GB, 32GB, 8GB \ iPod Touch 3rd Generation 32 GB, 64 GB.

Operation:
Play your iPhone (iPod, Touch) and plug the unit into the interface of the iPhone (iPod, Touch).
Turn on the car radio, adjust the frequency to the same as the one the unit playing so you can enjoy your iPhone (iPod , Touch) music by your car stereo.