1. USB Travel Charger for iPhone 4 2. Input: 100V- 250V, 50/60Hz 3. Output: DC 5.0V MAX:1000mA MIN: 150mA USB Travel Charger for iPhone 4 Description: 1) Fits to any USB cable, safely and speedily charger your device 2) Input: 100V- 250V, 50/60Hz3)Output: DC5.0V±5% MAX:1000mA MIN: 150mA4) Compact and light weight Compatible with the following: Apple: iPhone 4 , iPhone 3GS , iPhone , iPhone 3G