iphone usb mini charger for 3G 3GS 4G 1. best quality 2. competitive price 3. new arrival model 4. short circuit protection 5. made by ourselves safety approval 1.Certification: CE.ROHS AND FCC 2.input voltage:AC 100-240v 50/60hz 3.output voltage:AC 90-264v 47/63hz Advantage: 1. AC input voltage and output voltage fit for everywhere 2. with short circuit and overchargering protection 3. installed with EMI filter, minimum wave