There are 2 pods for options: 0.8Ω and 1.2Ω, which makes flavor in various layers from original taste and nicotine experience. 0.8ohm increases the cloud when you are vaping, if you want to save power and achieve a more enduring vape, pick 1.2ohm. E-juice filling on the top, No need to plug the cartridge out. The only step you need to do is to remove the clamshell from the top, and then you can fill the E-juice conveniently. Visible 2ml cartridge shows remaining E-juice real-timely,no need to worry about E-juice being run out. You can secure the pod with a magnetic connection, and then enjoy a seamless vaping experience.