Based on users' suggestion about the first version of Kubi, Hotcig finally introduced a refillable Kubi pod kit which remains the same specifications as the previous edition, such as built-in 550mAh battery and 1.7ml e-liquid capacity. But the new Kubi refillable pod kit allows you to use whatever juice flavor you desire, which is more economical and practical. What makes this refillable Kubi pod different from most pod systems in design should lie on its airflow mode. The traditional pod kit usually features a big air hole at the bottom center of the cartridge, making the airflow go up straight to the coil; while the Hotcig Kubi adopts two small bottom air holes that forms a surround airflow system, making the atomized particles smaller. In this way, it will produce smooth and moist vapor as well as more favorable taste, together with the updated 1.8ohm organic cotton coil. More info, please visit: https://www.heavengifts.com/product/Hotcig-Kubi-Refillable-Kit.html Don't forget to use code "AHG15" to enjoy 15% off discount.