This 5-pack of replacement dual-coil atomizer heads for the Aspire Atlantis Clearomizer Tank are available in 0.3 Ohm and 0.5Ohm resistant levels. The 0.3 sub Ohm atomizers are compatible with 70W-80W of output, while the 0.5 sub Ohm atomizers are compatible with 20W-30W of output. Aspire's Atlantis has raised the bar to new heights. This next generation tank system brings improved adjustable airflow and Sub Ohm coils that provides performance similar to even the best atomizers. Aspire's New Bottom Vertical Coil design creates an absolutely unmatched experience. This is absolutely the best tank that we've ever seen and every vapor needs to have one. The Atlantis Tank design is easy to carry, install, and refill. These atomizers fit V1 & V2.