N1 Pro 240W is powered by 2/3 replaceable 18650 cells whose max output reaches 240W. High power will bring you a great experience. And the heat resistant drip-tip makes it no more burning lips. Moreover, with the help of FROGMAN Tank's top fill and easy reload features, N1 Pro 240W can refill with great ease. It comes with a "Press-and-twist" design to easily open top cap and an innovative childproof lock system.