405nm 5mW Violet Blue Laser Pointer Pen Laser Module

405nm 5mW Violet Blue Laser Pointer Pen Laser Module

Specification
Output: <5mW
Wavelength: 405nm±10nm
Working Voltage: 3V (2 pcs AAA batteries, not included)
Laser Shape: Dot
Size: Dia.14mm
Battery direction for installation: + pole of the battery connects to the tail of the pen, – pole of the battery connects the spring of the inside module.