In modern times, you must take a handful of electronics with you when going out, such as cell phone, MP3 player, digital camera, etc. It is obvious that you can not bring about all the chargers. Thus, this solid charger is the best solution. It uses the solar energy as power supply, which is money-saving and environment-friendly. Furthermore, the built-in high-capacity Li battery is capable of charging at least three handsets. The included car charger is also a fantastic value.