20 X 9 mm blue backlight LCD display, clear reading of the tuning frequency
Full frequency range, effectively avoids signal interference
Automatically pauses playing music when calls incoming
Max 10 meters wide effective transmitting range
Powered by iPhone / iPod directly, no need extra power
Suitable for iPhone 3G, iPhone, iPod Classic / Touch / Nano
http://www.6deal.com/en/car-fm-transmitter-charger-for-apple-iphone-3g-ipod-nano-touch-classic.html