【4 Gang Rocker Switch & Waterproof Box】The switch box is designed to be waterproof and dustproof, made of quality aluminum and protects the switches against short circuit and damage. 【 Fast Charger & Voltmeter】The PD Type C& QC 3.0 USB charger enable you charge two devices simultaneously at full speed, makes the charger 40% faster than conventional chargers. The voltmeter help you know your battery better. 【Pre-wire & Surface Mount】All switches are pre-wire for easy installation; With aluminum bracket that can rotate 360 degrees, this gives it more flexibility for different mount locations. 【Wide Application】Can be used as rock switch, fog light switch, Work Light switch, width lamp switch, auxiliary light switch etc. Widely applicable for 12V-24V vehicles, trucks, jeeps, trailers, RVs, caravans, bus, marine boats, yachts, etc. 【FXC Warranty】Enjoy 2 year quality warranty under regular use. Offering customer technical service, feel free contact us for technical, installation and use question. Weather-resistant Box