What we will recommend you today is 12V to 5V DC-DC Reduction Voltage Power Adapter with USB Car Charger. This is really a smart digital component. First of all it is of great durability due to its high quality material. What is more it features waterproof shock moisture dust and flame retardant. Besides this power adapter module can also be used as a power charger. With a built-in USB you can charge your digital product even when you are driving. Overvoltage over current over temperature and short circuit braking automatic protection make it an ideal choice for wide customers. How can you refuse such a good item? Features: High quality material and never used; Easy installation and operation; Adjustable reduction module with over-temperature protection overheating and reverse connection protection; Used for power supply it is convenient; It also features waterproof shock moisture dust and flame retardant; Widely used in various fields; Specifications: Input voltage: between DC 8~22V; Output Voltage: 5V; Output Current: max. 3A; Operating Temperature: Industrial grade (-40'C~85'C); Epoxy potting waterproof shock moisture dust flame retardant. Function: overvoltage overcurrent over temperature short circuit braking automatic protection function and normal working conditions after recovery; Suitable for LED car display GPS navigation MP3 MP4 car DVD hard disk player stereo and other electrical and mechanical parts supply the best choice; Input and Output Lines Length: 10~13cm Output Interface Cable Length: About 28cm