The new ET-S BVC Clearomizer is part of Aspire's 4th-generation atomizer line part of Aspire's game-changing technology. The new Botton Vertical Coil (BVC) is the heating element in the atomizer to channel air flow. This tank is said to produce twice the vapour and richer flavour. The tank is sleak, the drip tip on the ET-S is slightly longer and has a fuller mouthpiece for more focussed vapor intensity.