The battery inside the flash has capability to pass 500 cycles, just like the smartphone.
It's a lamp also. You can do without the flashlight on your phone.
You can use an app to concent ios android and wp8.
It has a multi feature, very small and handy speedlight.
The first innovative external flash light led flash to help you dramatically improve the quality of photos and video you take with your iPhone, iPad, Android or Windows phone in low-light situations..