The Rainbow Crystal Bar disposable vape is compact and lightweight, so it’s ideal for commuting, travelling or days out. It’s ready to use right out of the box too, and when it runs out of liquid you can simply replace it with a new device. The 2ml of e-liquid and powerful built-in battery can provide up to 600 puffs, lasting longer than 20 cigarettes. The lifespan of a disposable vape varies, but it's typically measured in puffs. The number of puffs can range from a few hundred to over a thousand, depending on the brand and model.