This 2-pack portable immersion heater set is designed for 12V vehicle electrical systems, making it perfect for heating water on the go. Each 5-inch heating element plugs directly into your car's power outlet, allowing you to quickly boil water for coffee, tea, soup, or instant meals during road trips, camping adventures, or long commutes. The compact and lightweight design makes these immersion heaters easy to store in your glove compartment or travel bag. Simply submerge the heating element in a heat-resistant container filled with water, plug it into your 12V outlet, and wait for your water to heat up. These portable water heaters are ideal for travelers, truck drivers, outdoor enthusiasts, and anyone who spends extended time in their vehicle. Please note that these units are specifically designed for 12V systems only and are not suitable for 24V vehicles. Always ensure the heating element is fully submerged in water before use and never operate it dry to prevent damage.