Wotofo Serpent Mini RTA is a subcompact platform based off of the Serpent architecture. Why it is so popular? Practical? Cheap? Maybe both ?! Features: 1.Beautiful Mini RTA, Convenient to carry 2. Easy Top Filling 3. Dual Insulated Drip Tip to Minimize Heat Transfer 4. Extremely easy to build deck 5. Replaceable Glass chamber 6. Adjustable post 22mm Diameter Single coil Build Deck Leads lay down to Slots 2mm Diameter Terminals Side Tension Applied PEEK Insulator made in Germany Single 4mm Internal Bottom Airflow Dual Adjustable Airflow Single 1.5mm by 10mm Per Side Can Throttle Up and Down Build Deck Can Be Accessed Without Draining Tank Top Fill System 3ml Tank Capacity Dual Wide Fill Port 5mm Bore Drip Tip in hollow design