Kanger KBOX 70 4000mAh TC 70W Box Mod, design of built-in battery brings great convenience of replacing cells, just easily charging via a Micro USB port.  it is easy to transport and access for its lightweight zinc and aluminum alloy material. Enjoy a powerful and versatile vaping experience on this portable and compact temperature control device! Just only need $30.8 at http://www.kanger.info