Cheap Astronomy Green Laser Pen (20mW - 200mW)

I bought the 200mW version. What is the difference between 525nm and 520nm? I previously bought a 520nm 150mW Sanwu laser, which was significantly more expensive than this product. I compared them, and the laser beams looked almost the same. Anyway, I couldn't tell the difference. For the price, it's a good deal.

It's very good at my job, pointing out jobs high up in the air or things like that.

I recently purchased this laser pen, and it has exceeded all my expectations. The build quality is solid, and it feels durable yet lightweight in hand. The laser beam is incredibly bright.

It works great! The laser beam is long-range and super bright. I will be gifting it to my husband for Christmas!