First, I congratulate Amazon for this extremely punctual and fast delivery (48h), but I'm used to now. The battery itself is smaller than my iPhone 5 (a good point) and is frankly not very heavy! (Two good points). The package contains the micro-USB power cable of the battery, and an adapter for iPhone chargers 3GS / 4 / 4S. Two ports USB, an LED lamp in the middle, a power button and the blue LEDs indicating the load current. This is really convenient, whether for short or long journeys! Battery failure? This IS FINISHED! I give five stars to this great gear over with a lovely design with an over protective film. Do not listen to bad reviews! Take that! So convenient, I highly recommend!