You see a big number on the box—say, 6000 puffs—and you think, "That'll last me a month." Then two weeks later, it's sputtering. What gives?

The puff count is a manufacturer's estimate, not a promise. It's calculated using a standard draw length (usually around 2-3 seconds) and a set frequency. But you don't vape like a robot. If you take long, deep draws, you'll burn through the e-liquid faster. If you chain vape, the battery will drain quicker. So that number is a rough guide, not a guarantee.

Think of it like the mileage estimate on a car: it depends on how you drive. Same with puff count—it depends on how you vape.