SHE'O&reg; Cool Ancient Dragon god Mortal Kombat USB Car Cigarette lighter roof laser projector ghost shadow logo LED light lamp projection light projector atmosphere reading light Plug and Play Operating Voltage: 12-24V ; Current:2.1A ; Output power: 3~5w USB mobile phone charger port Operating temperature: -40C~105C Size: Length(25cm) ; Diameter(2.3cm)