Focusable Red Laser Module Diode Beam 6/9/12mm OD Dot Cross Line 650nm 3v 5v

Wavelength: 650NM. Laser wavelength: 650nm. Wavelength: 650nm. Laser is harmful to the eyes. Do not expose it directly to the eyes. Do not expose red light with a power exceeding 30mw to the human body (laser protective goggles can also be worn to protect the eyes).

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