Product descriptionFeatures:4 USB ports can charge 4 USB devices simultaneously, as mobile phone, MP3, IPOD, USB fan, USB light etc.Build-in Smart protects against short circuit, over-voltage and over-current. Smart USB ports detect your devices intelligently to deliver the optimal charging current and speed for any connected devices. That can prolong the service life of your devices.With LED light indicator, make it easier for you to use. The product has a voltage indication function, which can monitor the battery voltage of the car and make it safer to use.The working power up to 180W. Enough for car electric blanket, electric cushion, car cleaners, etc.Note:Made for 12V-24V vehicle ONLY.Working power of each socket can NOT exceed 100W; Total working power can NOT exceed 180W.Please use this product under normal temperature. Product may damage if the product operating environment temperature exceeds 60C.Please keep the product away from infants and toddler.Please insert the cigarette end into the cigarette lighter and connect to other electrical products after 15 seconds.Please turn off the product switch when starting the car engine.Turn on the product switch after starting the car.Please pay attention to prevent the cigarette lighter from popping out.productDescription { color: 333333; word-wrap: break-word; font-size: small; line-height: initial; margin: 0.5em 0px 0em 25px;}productDescription_feature_div > h2.default { color: CC6600; font-size: medium; margin: 0 0 0.25em;}productDescription_feature_div > h2.books { color:333 important; font-size:21px important; line-height: 1.3; padding-bottom: 4px; font-weight: normal; margin: 0px;}productDescription_feature_div > h2.softlines { color:333 important; font-size:21px important; line-height: 1.3; padding-bottom: 4px; font-weight: bold; margin: 0px;}productDescription > p, productDescription > div, productDescription > table { margin: 0 0 1em 0;}productDescription p { margin: 0em 0 1em 1em;}productDescription h3 { font-weight: normal; color: 333333; font-size: 1.23em; clear: left; margin: 0.75em 0px 0.375em -15px;}productDescription table { border-collapse: inherit important; margin-bottom: 0;}productDescription table img { max-width: inherit important;}productDescription table td { font-size: small; vertical-align: inherit important;}productDescription ul li { margin: 0 0 0 20px;}productDescription ul li ul { list-style-type: disc important; margin-left: 20px important;}productDescription ul ul li { list-style-type: disc important; margin-left: 20px important;}productDescription > ul ul li { list-style-type: disc important;} productDescription ul li ul li { margin: 0 0 0 20px;}productDescription .aplus p { margin: 0 0 1em 0;}productDescription small { font-size: smaller;}productDescription.prodDescWidth {max-width: 1000px}