The Crown M pod kit is compatible with the Uwell Crown M coils. There is no tedious maintenance required because of their push-fit nature; simply take out the old coil from the pod and replace it with a new one. Both of these coils have a mesh structure that quickly heats up and vapourizes more e-liquid with each draw, improving flavor.
Uwell also offers a revolutionary 0.4 Ohm / 0.8 Ohm coil, which is perfect for RDTL (Restricted Direct to Lung) vaping, in addition to their usual 0.6 Ohm coil. Basically, two coils together, with a double mesh construction within each. You have the option to vape with one or both coils. More vapour is produced when both coils are selected, but an MTL (mouth to lung) vape that is more akin to smoking a cigarette is produced when the single coil mode is activated.