Here come 2 kinds of cartridges: Built-in 0.8/0.6ohm coil, which will cover all kind of e-juice in the market.
Main Features: 1. Top filling cartridge to prevent leakage, with visible window to observe retain e-liquid 2. Built-in 0.8/0.6ohm coil, suitable for sweetness e-liquid/less sweetness e-liquid