essential tpe The Icon Power Pack for iPhone and iPod (1000 mAh) Charge your iPhone or iPod anytime and anywhere with this iconic battery pack Compatible with all generations of iPhone  2G, 3G, 3GS, and 4, and iPod with the standard charging port EL film technology indicates battery levels, just like the battery icon on your phone Up to 3 hours of additional talk time for 3G and 7 hours for 2G Feather-light and ultra-portable with dimensions of just 2.95 x 1.81 x 0.63 inches (74 x 46 x 16 mm)