This charger is the perfect solution for people on the go, the best cable to use when in a car. The cable is coiled which prevents tangle and keeps space neat, it's very sturdy so it will last. There is also an additional USB slot which is very useful if you have more than one device for a rapid charge as well. The 3.4 amp output is sufficient to support rapid charging and will safely charge your device up to the maximum allowed by the device.