You can charge two devices simultaneously, charging a smartphone with a 1 amp outlet and a tablet with a 1 amp outlet or a single device up to 2.4amp offering a fast charge (in half the normal time). Features: LED Light Charge two devices simultaneously Fast charging option for tablets and smartphones Short circuit protection to avoid overcharging your device Intelligent IC chip which recognises a full battery and ceases to charge once the battery is full Specification: Input voltage: 100-240V AC 50-60HZ 0.3A Max Output: DC5V 2.1A Package Includes: FX Mains Charger Dual USB 2.4A - White