Feature: USB outlet: 5V up to 4.2A. Short circuit/overheat protection. Waterproof protective caps and USB cover. Multifunctional product with Red LED indicator light inside, which is perfect to use on travel. Waterproof dustproof material can be used for the interior and exterior application. Can be installed on dashboard or any other flat surfaces. Optimised for iPad, iPhone, iPod, Android Phone and other USB powered devices - fast charging at full speed. Widely used with electric equipment for power supply: Vehicle, GPS, mobile phone, camera, mp3. Apply to all USB charging mobile phones or other electronic products. Run multiple accessories at one time, very convenient and easy to use. Specification: Color: Black LED Color: Blue/Green/Red Material: PC Voltage Meter: Operating Range: DC 5-15V Display: Digital display USB Charger Ports: Operating Voltage: 12-24V Interface: 2 USB Output: DC 5V 2.1A/2.1A Caution: Only use on voltage specified Do not operate this device while driving. Check maximum voltage on devices to charge in advance. Always cover outlets when not in use to avoid dust and water entering. Fitment: Universal fits for Vehicle, Motorcycle, ATV, Boat, Car, Marine, UTV, Camper, Caravans, Travel Trailer, etc. Widely used with electric equipment for power supply: Vehicle, GPS, mobile phone, camera, mp3 and other USB powered devices.