In the early 70s of the 20th century, NASA developed an analog light source capable of producing "25 million candles", miniaturized it and sold it to the commercial market, and a flashlight company called Streamlight was founded. Today, Streamlight is a leading manufacturer of emergency, military, outdoor, industrial, and other mobile lighting tools, with more than 150 U.S. and foreign patents, and is a pioneer in the field of rechargeable flashlights. In 2009, Streamlight also assisted in the development of the ANSI/NEMA FL 1 Flashlight Basic Performance Standard, which provides a reference specification for the global flashlight market and flashlight manufacturers.
 
One of the most eye-catching features of Streamlight is the TEN-TAP gear programming technology, which allows users to set the flashlight's preset beam options simply by tapping the switch button in several different ways. This customization function can greatly meet the personalized customization needs of consumers and refresh the same standard default mode. TEN-TAP is arguably the most fun and fun flashlight feature out there.
 
Streamlight's common flashlights are divided into multiple series such as Stinger, Strion, ProTac, PolyTac, Stylus, etc. Among them, the Stinger and Strion series have the highest beam distance and enhanced lumen output, which can still be seen at a glance 200 meters away in the dark, which is the first choice for search and rescue missions and patrol exploration, and the price of high-end models is more than 1000 yuan. These two series mostly use rechargeable batteries, which are easy to use and have a good battery life. The high gear can basically be more than 2 hours. However, the waterproof level is only the basic splash water IPX4 level, and the impact resistance distance is 2 meters, which is inferior to the protection performance of SureFire. Interestingly, the lower-priced ProTac and PolyTac have a higher waterproof rating and can reach the IPX7 level for water immersion, which has a lot to do with the better sealing of the disposable CR123A battery.
 
ProTac series provides consumers with professional tactical flashlights, with prices ranging from 300~800 yuan; The entry-level PolyTac series starts at 400 yuan, which is suitable for daily lighting use. The main difference between the two is that the ProTac is an aluminum alloy metal case and uses a durable anodizing process. PolyTac is made of polymer, which has high strength, toughness and lower cost than aluminum. Users can choose the right series model according to their own needs. In addition, both models are equipped with interesting TEN-TAP functions, which greatly enrich the needs of users.
 
Although there is no official way to sell it in China, there are many overseas shopping products, and many offline outdoor equipment stores sell them from time to time. There is still a long way to go with SureFire in the field of tactical flashlights, but in terms of outdoor civilians, Streamlight is cheaper, and the material workmanship is first-class, which is very competitive.