The SMOK GX350 Box MOD has the maximum output power(350W) in the global with a so much compact size. The max output power can up to 350W when powered by 4 x 18650 batteries. And the Micro-USB port supports firmware upgrade but not for charge. Available in 4 colors.
Max Output Power: 350W (Within 4x 18650 )
Battery: 4x 18650 battery cells (not included)
(You will need an external battery charger to charge the batteries)
It comes with