... t use in the presence of flammable gas. External power bank , Model: Q74800mAh MiUi Power Bank for iPhone ipad Features;1. ... use.4.CE,FCC,RoHS certificate,reliably,quality assurance. Specifications: Item: MIUI Power Bank Q7Interface: USB(out) Micro(in)Capacity: ... use.4.CE,FCC,RoHS certificate,reliably,quality assurance. Specifications:Item: MiUi Power Bank A1Interface: USB(out) Micro(in)Capacity: ...