Color: Black The Devia Smart external battery uses a 20000mAh battery to charge other devices. Quickly charge your iPhone or iPad with it. 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.