Two prefilled pods of 20 mg/ml nicotine salt e-liquid, each capable of producing roughly 600 puffs, are included with the SKE Crystal Pro 600 pods. The SKE Crystal Pro 600 pod vape kit is compatible with these pods. https://www.no1ukvapesupplier.co.uk/products/ske-crystal-pro-600-pod-kit-box-of-10