The SMOK X CUBE II is a substantial upgrade in all aspects. Beautiful all-metal design with brushed-metal finish, and bigger OLED display, it looks like an integrated whole. It supports Bluetooth 4.0 technology, and a customizable LED that potentially illuminates in up to 16 million colors. 160W maximum output will bring you an unexpected vaping experience. Magnet-held battery cover allows you to replace batteries almost instantly. And there many more functions are waiting for you to discover. All these make X CUBE II one of the most excellent devices ever made.