This is a type for vehicles with a dedicated harness that comes with a 2-port USB power supply that is ideal for mobile power supply. This product is not completely waterproof. Please do not use in car wash or rainy weather. Also, when not in use, please make sure to attach the included rubber cap. Condensation may occur inside the body (rubber cap) due to temperature changes. Avoid places with high temperature changes (around the engine) and check frequently to remove water droplets. (Use an air duster or vacuum cleaner to remove water droplets. This may cause trouble. Specifications: USB port: 1,000 mA x 2; DC 5V; Maximum output: 2,000 mA (when using only 1 port); Splashproof specifications; Built-in LED (blue) ; Power output: optional terminal in headlight case