This is a rare type of RTA with top-to-side airflow and drip-style liquid feeding. It has a similar structure to the VISION RBA for boro devices, making it very resistant to liquid leakage. It's also very similar to the Radiator RTA. The air flow pins without holes are missing from the time of purchase. Please be aware of this. (Instead, three 0.8mm pins were included.) I built it once and used it indoors for a short period. It's a beautiful item with no signs of use. I have cleaned it with ultrasonic and alcohol cleaning before listing. I have too many VAPE items, so I'm decluttering. I will lower the price at my own timing. Thank you.