We have most models of portable power bank in the markets now, except private models. Some models are available in capacity of 1500mah,2000mah,2200mah,2600mah and 3000mah, and other models are ok in 4000mah,6000mah,8000mah until 15000mah. It depends on the model. The case of mobile power bank is in metal casing or plastic casing for your choice.
Logo on power bank: silk printing, full color printing, laser engrave