1) ORICO Dual Port USB AC Wall Charger charges with retractable prongs. 2) Use your existing USB charging cables to charge most USB powered devices; Easy-to-see LED confirms whether USB charger is properly connected. 3) With blue LED indicator. 4) AC input: 110~240V AC 0.8A 50~60Hz; DC output: 5V; USB output: 1 x 2.4A 1 x 1.5A. 5) Max. power rating at 20W /3.9 Amps output. 6) Compact design with mini size and flip down AC prongs make it easy to carry on travel. 7) Sophisticated circuit is designed with over-heat over-current over-charging protection. Charging will be automatically stop when battery is fully charged.