Features: 1. Convenient to carry Ideal traveling tool, lightweight size, convenient to carry. Charge your mobile phone anywhere, anytime. Never need AC power, all you need is just an AA battery. 2. High efficiency and power saving. Max currency for max. efficiency transform design, the charger start to work automatically after it be connected with digital devices, till the battery run out of power, 3. Fashion and lightweight Unique design, leading fashion. Coated metallic surface, different colors available for option. Green or red light glow from the transparent part of this product, during the charging 4. Safe to use Adopts special integrated circuit as the charging main part to ensure and control the precise of the charging. Overvoltage protection integrated to protect your DC, MP3, MP4 and cell phone from damage. Smart to charge, safe to use. . Main technical parameters 1. Battery type: AA (5#) alkaline battery or Ni-H battery 2. Input Voltage: 1.0V-1.8V 3. Output Voltage: 5.8V?.1V 4. Output currency: max. 350 mA Instruction: 1. This product adopts 1 battery to charge cell phone 2. Open the back cover, observe the correct polarity then put the AA battery into the product,. 3. Connect the charger and cell phone with right cable, it means charging when LED is on. 4. The charger will stop working automatically when the cell phone battery is fully charged or the battery inside the charger is run out of power.