VandyVape Berserker V1.5 Mini RTA is an innovative 22mm version RTA. It features 22mm diameter and convenient airflow ring, five sizes of airflow slots can be adjusted by your preference. Berserker V1.5 Mini simplified top fill design and improved liquid flow. This device is durable and easy to clean. It comes with a single coil which is easy to operate, simplified top fill design, easy to refill. It will bring a very excellent vaping experience!