Different from other electronic products, this external battery is with a waterproof, shockproof, crash proof shell. You have no need to worry about the weather which will destroy the product. It can be used everywhere charger emergency power in your pocket is the essential travel companion providing portable power for your phone when you need it most. You can use this compact and convenient 5V mobilephone battery to charge your phone at home, on the road, or whenever it's not connected to a computer. The cell phone power supply fits to charging digital communications products with DC-5V. Packing with 5 kinds of chargeable connectors Apple, Micro USB, DC2.0. DC3.5 and adapter. It can charge iPad 2&1, iPhone 4/3G/3GS, iPod, and HTC, MOTO, NOKIA ,Samsung etc. And the LED torch can last 300 hours. You can connect the 5V power supply directly to your phone. Featuring a compact design, this backup battery case offers fast and efficient charging as well as convenience to carry. With this charger battery, you can always talk & text as long as you need. The replacement rechargeable battery is small enough to carry anywhere, making it ideal for the mobile professional or casual users. This external battery is the necessary accessory for you to enjoy your talk with your friends or family. Great for travelling use! A great accessory you should have! Do not miss it!