There you go. JetLasers ships all new units with a set of magnets for people that only have flat top 18650 or 26650s but nothing about them in the instructions--so several people have asked th same question you , only to find the magnets afterward.
You are not alone. Everyone who owns a JetLasers product, loves it.
JetLasers products more expensive than other hand held lasers, Yes, but not by a lot and are worth every penny spent to obtain one considering the exceptional quality and features of their products at a reasonable price + the best customer service/support in the business and not just before you buy---you get the same attention after you buy. Any problems are always addressed quickly made right. All of their lasers a built overspec so after many years of use they still will meet specifiations.
Gray and Jetlasers only want happy customers who feel they received something of value that they enjoy for their hard earned money spent with JetLasers. They will do whatever it takes to accomplish that--they have been known even to allow product to be returned for full refund several months after the sale if the customer is simply not happy with the product purchased for whtever reasons.
The JetLasers guys are a different breed---not in it just for for the money.
The founders are all engineers and laser enthusiasts themselves and are proud of the products they make. They do the best job they can do within affordable prices. Very unusual for a Chinese company + plus ther customer service is the best in the business.