Those pod compatible with the whole XROS family, but 0.4ohm pod top fill is only compatible with XROS 4 Kit, and XROS 4 Mini Kit.
The upgraded COREX tech provides a more intense flavor and a longer pod lifespan. The COREX 2.0 builds on the first generation with refined adjustments to the morph mesh grid size for optimal temperature matching, enabling faster heating and an explosive taste. Meanwhile, upgraded cotton efficiently supplies e-liquid, prevents burnt taste, and extends the lifespan.
It is fully compatible with the whole XROS family. like Xros / Xros 2 /Xros Mini / Xros 3 / Xros 3 Mini / Xros Nano / Xros 3 Nano / Xros Pro/ Xros Cube. but 0.4ohm pod top fill is only compatible with XROS 4 Kit, and XROS 4 Mini Kit. It holds 2ml and 3ml capacity for daily vaping. And it comes with top filling system and visible window design to bring you great convenience. there are 5 types of pod available: 1.2ohm pod, 1.0ohm mesh Pod, 0.8ohm mesh pod, 0.6ohm mesh pod and 0.4ohm mesh pod, The mesh pod are for a wider range of pod options from loose MTL to tight MTL. 4pcs each package