FeaturesLED power indicator light1 metre power cordUse in cars, boats & caravansPower inverter - converts a DC supply to mains voltageIn-car power socketThis Duracell 400W Twin UK Portable Power Socket Inverter with AC and USB ports is great for delivering power while travelling. The USB ports output 2.4A 5V perfect for digital devices such as tablet PC\'s including iPads, iPhones, Blackberry, Kindle etc. The mains sockets remain available to power additional items such as a laptop or DVD player. The inverter includes shutdown protection, which powers down the inverter if battery power drops below a certain level.