Car Charger, SIGWEER Quick Car Charger Adapter Smart IC Dual USB Car Charger LED Display Car Voltage Detector Car Battery Monitor for Phone X/ 8/7/ 6s/ Plus, Samsung Note 9/ Galaxy S9/ S8 (Black) Smart IC Adaptive Technology - Charge two devices simultaneously at full speed. Works with all USB-powered devices including Android & Apple smart phones & tablets.Smart IC boosts up charging process at the max speed possibly up to 3.6A, detects and responses your devices providing optical output current with a constant rate. LED Voltage Display - Monitories the vehicle's battery and electrical system automatically and indicating the car voltage in the screen, you will know the health of battery while driving. Please pay attention when the voltage is under 12V. Cool and ractical - The upgrade display, with soft LED blue light without glare. Soft LED lights help you locate the ports in darknes. Highest Safety Standards - Dual QC3.0 USB charger socket is in line with the safety and quality regulations of the strictest. Provides protection against overload, overvoltage, overcurrent, overheat and short circuit, so that you have maximum safety in use. Certificated by CE and ROHS. Worry-Free Warranty - With 12month manufacturer 100% money back guarantee. You are welcome to contact us if you have any questions or concerns. Our reliable customer service will reply within 24 hours, always.