Uwin Twins Crystal 40000 Puffs：Offers up to 40,000 puffs with a 32mL e-liquid capacity and nicotine options of 2% and 5%. Equipped with dual mesh coils for smooth and flavorful hits. The 850mAh rechargeable battery supports Type-C fast charging, and the smart LED display shows battery and e-liquid levels. Dual flavor experience lets you switch between two flavors, with 10 flavor options to choose from, catering to various preferences.