Aspire Vrod 200 operates on dual 18650 batteries ( not included ) that support a maximum power output of 200W, it will meet your all-day vaping need, Aspire Vrod 200 Mod supports multiple output modes (Watt/Voltage/Bypass/TC/TCR/CPS (C1, C2, C3) and is designed with a 0.96 inch TFT color screen.