Tech enthusiasts and DIYers, this Quarton green laser module is seriously cool for all kinds of projects! It's a direct diode laser (not the older DPSS type) which means way better efficiency and stability - no power loss through crystals. The 505-530nm wavelength gives you that bright green dot for positioning, measuring, or sighting applications. Runs on 3-6V DC and puts out less than 1mW (Class II safe). The built-in APC driver keeps output consistent, and the aspherical glass lens gives you a tight beam with less than 0.6mRad divergence. Compact size at just Ø7mm x 26.1mm makes it easy to integrate into your projects. Perfect for automotive, medical, or sensor applications. Just remember - this is the module only, you'll need to wire up your own power source. Made in Taiwan with that quality craftsmanship you expect. If you need reliable laser performance without the inefficiency of older tech, this direct green module is totally worth it!