... test 3.Manufacture 4.2 years warranty General specification of usb car charger: Apply for GPS,cell phones,PDA,etc Input Voltage12 ... :18.5kg/cartonSuggested applications: mobile phone charger, cell phone charger, MP3/MP4 player charger, GPS charger,PDA charger, digital camera, led power driver,etcOur ... under 1%~2%.2.Best price: We make the product by our own company, so we can control the quality well ...