he Exvape Expromizer V4 MTL RTA is the fourth generation of the MTL RTA designed in Germany. The Expromizer V4 retains the single coil deck with 23mm diameter. With the top filling cap and top airflow, the Expromizer V4 MTL RTA can be filled quickly and easily and also prevent leakage completely which makes the Expromizer V4 easier for beginners. Besides, the Expromizer V4 tank adopts an top-to-bottom airflow for purer flavor and the liquid channels which directly contacts with the cotton for better liquid flow. Just take the excellent MTL vape device home