The all new Uwell Crown V Tank is beautifully crafted with stainless steel and ultra smooth feel and luster. The airflow ring has an embossed the Roman numeral "V". Uwell patented self-cleaning technology allows the atomizer to absorb e-liquid in the condensation holder. Through regular use this e-liquid is then vaporized. This reduces the frequency required for cleaning and lessens leakage. Providing a wide opening and a silicone check valve allows for easier filling with less leakage. Use a single, dual, or triple mesh coil to optimize and customize the vaping experience.