This maybe one of the coolest items to use as promotional gift! This is a sound amplifier for iPhone 4 and iPhone 4s. This product is designed to be portable and to use the sound coming from the iPhone, without using any electricity.

Stereo Amplifier

iPhone Sound Amplifier

Simply place your iPhone in the slot and play any music! Besides, this sound amplifier also protects your iPhone as well. This will surely attract some attention to your brand! Just put your logo on it and use this product for special offers. This will definitely increase your brand recognition.

Looking for more ideas of electric devices or other promotional ideas? Hang on and check out the following posts!