The MiLi will give you the freedom to use your iPhone 3G 3GS without the daily worries of running out of battery life! Enjoy your iPhone for voice, music, video, games and business applications with extended, stable, and rechargeable power. You can now experience up to two days or more of uninterrupted iPhone power, depending on usage. The Mili Power Pack is made of the highest quality materials and integrates the best in technology. With the MiLi, you can have portable power, anywhere, anytime you need it. Exterior color – Black, Interior colors may vary. The Power Pack is Apple Certified for use with the iPhone 3G 3GS and iPods.