Vaporesso - XROS 0.4Ω X 4 cartridges are specially designed for optimum performance with your XROS Pro system. These 3ml cartridges offer a superior vaping experience, ensuring consistent vapor production and incomparable flavor with every puff. It's worth noting that these cartridges are only compatible with the XROS Pro system, guaranteeing the efficiency and durability you've come to expect from Vaporesso. By using Vaporesso - XROS 0.4Ω cartridges sold in packs of 4, you're sure to have a top-of-the-range product that meets your vaping needs. Trust Vaporesso to give you the best possible experience with your XROS Pro system.