635nm 638nm Orange Red 5mW Laser Dot Laser Module
Description :
Output: <5mW
Wavelength: 635nm±10nm
Working voltage: 3V
Power Supply: 2*AAA batteries, not inlcuded.
Some people may think orange is exactly the same with the color of orange. It is incorrect. compare with 638nm and 660nm, 638nm is brighter when they are in the same output. 638nm is closer with the yellow color so that we call it orange/red. it cannot be exactly the color like a orange or sun.
