Fans of the original OBS Engine RTA will be happy to hear the sub-ohm tank version is now available. The OBS Engine SUB features the same great design and features and now utilizes the Engine SUB atomizer heads. The OBS Engine SUB features a large 25mm diameter design with a high capacity 5.3ml quartz glass tank. The hidden side fill design allows you to conveniently refill the tank. The OBS Engine SUB utilizes a top adjustable airflow valve with an advanced 360 degrees airflow circulation system which helps recycle the airflow throughout the tank.

The OBS Engine RTA features a 304 stainless steel construction in a unique leak resistant design. This tank utilizes Engine SUB 0.2ohm atomizer heads designed for variable wattage. The Engine SUB atomizer heads feature a vertical coil design with organic cotton and has a recommended wattage range of 40 to 100 watts.