The iJoy RDTA 5S is the sixth generation model in the popular iJoy RDTA series with many quality of life improvements and changes. The iJoy RDTA 5S features a modified innovative top fill system with a center tube for easy refills. The iJoy RDTA 5S was designed to be compact for increased and improved flavor. The iJoy RDTA 5S features a gold plated dual post velocity style build deck for dual coil builds. The iJoy RDTA 5S features a multiple airflow control system with six cyclops airflow holes. The adjustable bottom and top airflow control rings allows for a wide variety of airflow configurations that may be adjusted to your personal preferences.