Currently there are two different resistance types, 0.6Ω DTL and 1.0Ω MTL. The Uwell Crown Pod cartridge is an open-type cartridge. The pods are capable of holding 3ml of eJuice. The top-fill design reduces leakage and you can repeatedly filling your favorite e-liquid and nicotine salt e-liquid. Compatible with the 0.6ohm and 1.0ohm coil for Restricted DTL, using classic double heating wire design, excellent atomization effect, strong flavor release. The Uwell Replacement Refillable Pod Cartridge is designed for Uwell Crown Pod System Kit.