Dual USB Car Charger, Magic-T 3.1Amp Smart Port (2 Pack) with Escape Emergency Safety for Apple and Android Devices Guaranteed Safety. Intelligent circuit system (12 / 24 volt input voltage) stops charging as devices get full power, in case of dangerous situations like short circuits, over-heating, over currents, etc. Dual USB Port. This handy charger features 5V 2-port design, which allows for high-speed and safe charging two devices simultaneously. One at 1 amp for maximum speed in charging iPhone while one at 2.1 amps for Android or other USB-powered devices. Added function. LED indicator and Emergency hammer. Blue LED glows from inside to let you know it is charging but it is not distracting while driving. Solid metal point serves as a Life Hammer for breaking out windows in an emergency. Solid Metal Construction. It is made of polished aluminum alloy that is much more durable than plastics. Well-shaped design make it easy and tight insert in or out from car socket. Life time & Hassle-free Warranty. If for any reasons you are not satisfied with our service or product, please contact us first. Magic-T backs up all charger with Life Time Warranty and takes responsible for any un-expectable issues.