Drag 4, the fourth-generation mod box of the Drag series, is designed with natural resin and solid wood materials. The kit includes a U-force K tank working with 2-in-1 PnP coils (TW30 and TW20) for richer taste, dense clouds and a longer lifespan. With the amazing multi-function switch, vapers can define QS lock to lock wattage, device, or turn power on/off at ease. Besides being supported by dual 18650 batteries, the mod features the highest standard 5V/3A charging technology that allows for less recharging time and longer battery life. Lastly, the kit is set up with a new TC mode that accurately identifies the 4 most commonly used heating wire materials and meets the specific need for DIY users.