Waterwich Waterproof Marine Dual USB Car Charger Adapter Socket with 🚗 LED Digital Voltmeter - 5V 4.2A for Universal Rocker Switch Boat RV Vehicle Review

Please note: The voltage reading will be visible only by connecting to the battery and the voltage also can be read when the cover is engaged , Charging wire will also affect the charging speed,The original charging wire inside the copper wire is more than ten will directly affect the charging speed,Please check wheather your charging wire is original. High and Low Temperature Resistant Nylon Flame Retardant Materials, Totally Environment Friendly, working temperature from -40 Celsius Degree to 85 Celsius Degree. IP65 WATERPROOF Design,effectively protects the charger against sudden splashes. Dual USB interface design with single output of 2.1A (max total output of 4.2A), it quickly charges for most smartphones, tablets, GPS, digital camera, PSP/MP3/MP4 and other USB-devices. Ideal for on the go family that requires charger in travelling,CE & ROHS certification with Overload, Over-current and Short Circuit Protection to ensure charging safety, meanwhile, built-in converse connection protection that ensures the circuit won't be burnt out if wrong wiring. LED illuminated USB charging socket with Rubber Seals, Fits any 12V-24V RV Yacht SUV Motorcycle Ship Boat Marine Van ect.With our strict quality control system, we test each item and 100% ensure in good condition before we ship.