[Easy installation]-“+” to the positive pole, “-” to the negative pole. Can be installed vertically- horizontally or underneath the dash- or any flat surface. [Waterproof and dustproof]-The shell of high-quality waterproof and dustproof material makes it can be installed in any position, effectively protect the internal circuit, effectively extend the service life. [Safety protection]-Safety Charging design will prevent your devices from over-heat, over-current, over-voltage, over-load, and short-circuit. [Widely used]-Widely used with electric equipment for power supply (motorcycles, ships, trucks, ATV, RV). Dual Cigarette Lighter Splitter Power Adaptor Sockets Combination Cigarette Lighter Power Adapter Socket Brand new and high quality 2 way waterproof design Delicate in outlook, premium in material and durable in use Color: Black Item Dimension: about 85 x 45.5 x 55.5 mm Cable Length: about 2