Feature: Easy installation:Pre-wired for you to easily install in both 12V and 24V vehicle, yacht, ship, caravan, truck, etc. LED Voltage Display: Builts in digital LED voltage monitor, dispalys the real-time accurate voltage status of your vehicle's battery for preventing problems caused by low voltage, the light also makes quick and easy to find USB ports in the dark or at night 100% brand new and high quality Rocker Switches Panel: These switches are newly design to increase durability.Splash-proof panel face, water resistance caps and anti-seepage rubber ring .Red LED light indicator, waterproof board. Wiring description: The red wire connects to the positive terminal of the power supply, and the black wire connects to the negative terminal of thepower supply. Installation method: Please first use the hole opener to open the hole, put the product in, and then tighten it with the thread fixing ring! Specification: Cigarette lighter material: environmentally friendly flame-retardant nylon material, copper and PVC Cigarette lighter inner diameter: 2.1 cm Cigarette lighter outer diameter: 3.6 cm Total length of cigarette lighter: 5.5 cm Product weight and acceories: 112 g Product line length: This product 0.1m high quality wiring harne Input voltage: 12-24V, output: dual QC3.0 (36Wx2C) Product use: Support mobile phone, tablet computer charging, and on-board electrical appliances (all cars with working voltage of 12V-24V can be installed and used). USB provides charging for car appliances, which is very practical. Cigarette lighter can be equipped with cigarette butts, and cigarettes can be lit. Note: Please allow 1-2CM differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Product features: Flame-retardant nylon material tastele and durable. Can be used with most USB mother to charge the GPS navigation electronic dog, tablet computer and mobile phone! With waterproof cover, waterproof and dustproof.