Power on the Go Monster"s "No Waiting Technology" provides all the power needed for the most demanding smart phones and USB devices. Just plug it in, hit the charge button, make the call.Auto sensing technology detects exactly what speed your smart phone or USB device requires and provides the speed and power in a flash – all of this in a sleek package. You won"t find a faster charger that fits in your wallet. Big enough for your phone. Small enough for your wallet. Size does matter. Monster"s PowerCard packs serious punch. Super thin, it fits into your wallet for power on the go. A great value and easy to transport, it"s perfect for quick emergency charges. Five+ Hours of Portable Energy and 3x Faster The Powercard charges up to 3 times faster than standard chargers. 3 LEDs on the Powercard show your battery level. Use it with anything that requires USB charging. Wherever you go, the Powercard keeps you in charge. PowerCard quickly provides five hours of energy to your Smartphone. Recharge any Smartphone with the built-in USB port. Features Charges up to 3x faster than standard chargers5 stylish colorsFits in your walletUltra thin size of a credit cardConvenient for travel or emergencies1650 mAh capacity for battery packQuick charge to 1.5 ampsUSB 2.0Includes standard USB cable3.438"L x 2.125"W x 0.25"H1.6 oz.