1、The USB charger adapter converter module can convert unstable voltage DC 12V to stable DC 5V / 15W 3A output Features: The USB charger adapter converter module can convert unstable voltage DC 12V to stable DC 5V / 15W 3A output. Made of imported integrated switch ultra-thin regulator module, the conversion rate is more than 96%. ABS housing characterized by waterproof, anti-shock and damp-proof, long term stable and reliable quality. Dual USB charging ports, allows to charge any two smart phones or tablet devices  at the same time. Super-thin, small size, high efficiency, easy installation and use. Specifications: Condition: 100% Brand NewCondition: 100% Brand New Material: ABS + Metal Color: Black Size: 4.1 * 2.1 * 1.8cm / 1.6 * 0.8 * 0.7in Cable Length: 50cm / 19.7in Input Voltage: 12V Output Voltage: 5V Output Current: 3A Output Power: 15W Package Weight: Approx.54g Package List: 1 * DC 12V to DC 5V Converter Module