Features High Efficiency 2 USB Ports Detect your devices intelligently and provide the optimal charging current. Charge up to two USB-powered devices simultaneously. Universal Compatibility Charge your USB-A powered smartphones, tablets, power banks or other devices with the optimal charging current, up to 2.4A per port. Safety Guarantee Built-in over-heating, over-current, over-voltage, overload, short-circuit protection and surge protection make charging safe, avoiding any risk of damage to your devices. Travel Ready International voltage compatibility (AC 100-240 V) and incredibly compact size with foldable plug design make it an ideal travel companion. Easily put it into your pocket, bag or suitcase. 18-Month Warranty Provide 18-month warranty for quality-related issues. Our friendly and reliable customer service will respond to you for lifetime technical support.