The VaporessoGen S 220W Mod shell is composed of three layers of protective materials which are a fire Resistance Polycarbonate/4 times Metal Spray/Breathing Rubber Coating for Light weight,Wear-resistant and fingerprint free use. The mod comes with the intelligent Axon chip inside with 4 modes available (Pulse, Power ECO, Smart TC and DIY) which will satisfy your different vaping requirements along with pulse mode which continuously gives you a hit throughout the puff (every 0.02s) – not just from the initial fire. The Power ECO Mode gives longer battery life. The Smart TC Mode can provide a one-step temperature control with the automatic identification of tanks. You can also vape with manual settings in DIY Mode. It is powered by 2 x 18650 batteries (SOLD SEPARATELY HERE) and can fire at a max 220W power output for huge clouds and flavour.