You and your iPod or iPhone love going everywhere. iMainGo2 provides a protective case for your iPod, iPhone and, built into the case, a portable speaker system. Now you can choose to listen by headphone or speaker. Share tunes with your friends. iMainGo goes wherever you go. No Need to plug it in or recharge. Its advanced design gives its four AAA batteries unprecedented life up to 30 hours. Don't be fooled by the size. Thanks to iMainGo's state-of-the-art electronics and speakers, you hear rich full sound you'd expect from systems many times its size. iMaingo2 is tough. Safely inside, your iPod and iPhone are protected from bumps and other rough handling by iMainGo's sturdy construction. The edge of iMaingo2 is the sound quality coming from the built-in speaker. What contributes in making iMainGo2 sound so fine is a combination of a high-quality digital amplifier, high-output stereo speakers, and tuned porting for enhanced bass response. All this and a case too! The iMainGo2 unit can be held in your hand and offers simple access to your iPod and iPhone's controls. It's both stylish, comfortable and is designed to fit all iPods and iPhones.