Enindel Fashion Simple Style Tea Mug with Infuser and Lid Glass Tea Cup 14 OZ (Glass set of 1)

How many ounces does this cup hold ( without the metal infuser)? the description shows its shipping/item weight of 12 oz. does cup say microwavable?

How do I get in touch with Enindel?

The top cap that closes for tea brewing. It consists of glass ??

Is this heavy? How much does it weigh?