The authentic Vapor Storm Stalker pod system starter kit features a compact size and no-button design, made from aluminum alloy. Powered by a built-in 400mAh battery, it will provide you with an enjoyable vaping experience. With special multiple protective functions, it will be very safe for you while vaping, such as low voltage protection, over puff protection, short circuit protection, overcharging protection, and over-discharging protection. There are two 1.8ml refillable cartridges, and it is better to replace the cartridge after using two cans of oil. What’s more, it’s also portable and very lightweight that you can carry it everywhere conveniently.