I was struggling for a while to find a reliable light source for my latest optical bench experiment, and I honestly felt like I was wasting my time with components that kept failing under load. I finally decided to try this fabry perot diode laser after hearing that it was a much more stable option. Since I swapped it in, the consistency has been great, and it hasn't given me any of the trouble the old ones did. If you are working on a similar setup here in the United States and need something that actually holds up, this is a solid choice. It's nice to finally have a part that just works.