If you happen to have one of the following:  iPhone 4S, 4, iPhone 3Gs, iPhone 3G, iPhone, iPod touch (4th, 3rd, 2nd, 1st Generation), iPod nano (6th, 5th, 4th, 3rd, 2nd Gen), you’re in luck. The Satechi wireless FM transmitter with LCD display is compatible with all of the above, making sure your gadget is fully charged while broadcasting your favorite music wirelessly from your device to your FM car/home stereo. Using it is easy enough – just plug it in your iPhone or iPod and mach the frequency on the LCD display (88.1MHz – 107.9MHz). After the tuning, you will be able to listen to music without any bothersome tangled headphones to get in your way. Useful.