[Waterproof and dustproof, no fear of extreme environments] Fully sealed waterproof aluminum alloy shell, 5521DC female waterproof interface, suitable for rain, snow, humidity, and dusty environments, ensuring that Mini can run stably in vehicles, ships, and the wild all day long! [Safety protection, stable and ] Built-in overcurrent/short-circuit protection, temperature control working range (-40 to 85), natural heat dissipation design, adapt to battery voltage fluctuations, and avoid the risk of battery over-discharge! No isolation between input and output. Cast aluminum shell, plastic shell, epoxy potting. Natural air convection cooling. High efficiency, life span up to 30,000 hours. Low voltage, overload, overheat protection. Ring terminal type + DC 5521 female waterproof adapter cable, Wire 16AWG wire, DC line length 1M, Input cord length 30CM Note:Installation guide not included, Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color:As Shown Material:Metal Package Contents: 1 * step Up Lighter cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.