Color : Black External battery Devia Guardian uses a 10000mAh battery to charge other devices. You can quickly charge your iPhone or iPad with it and you will clearly see how much energy is left on the LEDs. The power bank for iPhone and other Devia devices is made of durable ABS plastic and a flame-retardant material. In the event of a fire. the fire will not spread further. The pleasant surface finish will not discourage you from using it and will not embarrass you next to the phone.