Features: Over-heated, over-current and over-charging protection, self adapting to the charging devices. Maximum output current up to 3.1A, decrease the charging time by over 30%, rapid charging without interruption for devices' signal. Input: DC 12V-24V, universal compatibility with popular mobile devices with USB port, any device including digital cameras, PDAs, mobile phones and USB accessories. Dual USB ports, can charge two phones or tablets simultaneously. With 2 extra cigarette lighter holes which can be connected to other low current devices, such as car charger, electronic dog and GPS navigation. Just plug and play, easy to use and install. Fashion design, Made of ABS material, durable and fireproof. Specifications: Input: DC 12V-24V Output: DC 5V/3.1A Power: 15W Color: Black Package include 1x USB Car Charger