Features Design:Including USB charger cigarette lighter socket voltmeter charger switch fuse save more spaces easier to use and more functional. Waterproof:The product has a waterproof and dustproof cover which is safer when using and the cigarette butt is built-in to solve the problem that the cigarette butt is nowhere to be placed or lost. Voltmeter:The product comes with a voltmeter which can detect the battery voltage status at any time to prevent hidden dangers caused by bad batteries. Power Cord:130CM power cord to meet the installation needs can be directly installed on the battery reduce the difficulty of installation. After-sales Service:If you have any problem please contact us immediately we will help you solve it as soon as possible. Specification: Material:Metal + ABS Output Current: 5V 2A includes: 1*Power Adapter(No cigarette butts) 1*cable OR 1*Power Adapter(Include Cigarette Lighter) 1*cable "