The Mi-Pod Refillable Pod Cartridges have a 2ml e-liquid capacity and a cartridge resistance of 1.3ohms. You can choose from both disposable and refillable cartridges and the clear cartridges let you know exactly how much liquid you have left. They feature a patented OAS system (Oil and Air Separated) that combines a top airflow system with a bottom-fill, leak-proof cartridge design. This eliminates the possibility of a leaky tank and no more ruined batteries from your e-liquid draining out of the cartridge. The plug and fill works perfectly with your favorite nicotine salt liquids. Comes in a pack of two (2).