Geekvape Zeus Dual RTA is the upgraded version of the Zeus RTA. It's a 25mm diameter, leak proof, and single coil build deck. The build deck features a two post design with a single 3mm terminal per post and has large 5mm by 4mm wicking slots. Inside the Zeus implements a three dimensional airflow platform and utilizes several airflow channels for optimal flavor. The Central Internal Airflow uses a 6mm air slot while a side internal airflow utilizes nine, 1mm in diameter air holes. Airflow enters the Zeus through dual 10mm by 3mm located on the top of the atomizer allowing airflow to travel downwards to two side slots making its way to the base and upward for a smooth flavor. Juice enters the Zeus through a quarter turn top fill system and can hold up to 4ml of your favorite E-Juice. Under the top cap is a silicone ring to prevent your leaking. The Zeus by GeekVape is a great choice for any Vapers who enjoy easy to build decks, great cloud production, and flavor.