The Aspire has introduced Vivi Nova BDC with bottom dual coil system it has been updated with an advanced heating mechanism coil design. Bottom coil clearomizer becoming famous and demanded so Aspire redesigned BDC tank with a plastic composite material which can hold 3.5ml liquid. The tank is consists of five different parts which can be assemble and disassemble easily, which is also helpful for easy cleaning and maintenance. By unscrewing the bottom end cap Coil heads can be easily replaced. Drip Tip is made of plastic material and can be change or replace with new one according to your desired designs. Each clearomizer consists of one coil head 1.8 ohm rating.