The best vapes fit into three main categories. It's made by big legacy tobacco brands. The special K vape is designed to look like one of the expensive fountain pens you would see around. The K button in the middle will light up it can also display as you navigate through the voltage settings. When you purchase a special K vape pen, it can come with a 650mAH battery cell that perfectly functions for all kinds of oil vapes because it consumes less energy than the dry herb and wax vapes.