Every brand will tell you their device is 'heat-resistant' or 'leak-proof.' Ignore that. The truth is, all vapes are vulnerable to extreme heat because the e-liquid inside gets runny and expands. You'll see marketing about 'advanced cooling systems' or 'military-grade batteries,' but what actually matters is how you store the device.

Another piece of noise is puff count. Manufacturers love to advertise huge numbers, but in real-world use, especially in warm climates, you'll get fewer puffs than claimed. Heat speeds up evaporation and can cause the wick to dry out faster. So treat puff counts as a rough estimate, not a guarantee.