These Imperial Smoke disposable E-Cigs offer the highest puff efficiencies on the market. Enjoy approximately 600 puffs of pure pleasure. No more recharging batteries, cleaning or changing cartridges, and no more atomizers to screw in. Once the unit is finished, you can simply dispose of the entire E-Cig. The best part is that these disposable E-Cigs are fully charged and ready to smoke right out of the pack.