IJOY MYSTIQUE MESH Tank is a disposable tank but supports e-liquid refill.And the coil is not replaceable, so the mesh tank can supports you for almost 2 weeks, and the best taste is on 40-70W. Buying an atomizer just with a coil price. It features a generous 3ml e-juice capacity with an easy top refill system. Fully adjustable dual airflow control gives you a fully customizable experience You have the ability to choose the best airflow for your personal vape style and the wide dual airflow slots minimize leakage