This is a portable electric coffee grinder machine with a filter and coffee mug inside all in one set. It includes one coffee grinder, one double-wall stainless steel filter and one coffee mug but only equal to a size of a 0.8-litre coffee mug. There are 5 size options on coffee grinder from coarse to fine that can satisfy different customer requirements from Pour over to Cold brew coffee. A double-wall vacuum mug on the bottom can help you keep the temperature of the coffee and take it away immediately anywhere.