Green Light Laser Pointer Pen

1) Extremely bright green laser at 532nm wavelength

2) Max Output Power: 4mw

3) 1.1 mm beam diameter at source

4) Momentary push button switch

5) Solid, heavy duty construction

6) Constant wave output (as opposed to pulse output)

7) Takes 1 "AAA" batteries (not included)

8) Can be used for sky pointing, astronomy, projection on low clouds, signaling