The atomizer is an essential part for your Hooky to function. It is what ensures the puncture of the liquid in the head, and vaporization of the e-liquid. Hooky atomizers are designed to offer you a cold vapor particularly appreciated from hookah smokers. It is a spare part that must be replaced at regular intervals. The average lifetime of an atomizer if used daily is three weeks. If you find that your Hooky will not give you a sufficient amount of steam or the flavor is altered, it is probably time to replace the spark plug. Atomizers are identical on Hooky Royale and Classic. The replacement is very simple. Unscrew the old spark plug by accessing from the bottom of the head of your Hooky and screw the new one in place. Purchasing atomizers in packs of 5 is cheaper than buying them seperately. Do so, and your wallet will be happy!