Features: USB Charger:Dual USB charger super fast USB charger. it works for all usb-powered devices. makes the charger 50% faster than conventional chargers. Strong Power: 4 person rocker switch panel can control the electrical equipment in the vehicle as desired. Perfect Adjustment: the voltmeter helps you monitor the vehicle voltage in real time be more comfortable and safer. Wide Compatible:Pre-wired switch universal for all 12V vehicles yachts ships caravans buses cars and trailers. Quality Assurance: Made of the strengthened aluminum panel and premium ABS.Built with fuses protect the panel from over-heating over-current overcharging and short circuit. Specification: Material:ABS Size:14*13*11cm includes: 1*Switch Panel "