Laser Pointer sinar merah.<br><br>Description<br>1) Extremely bright Red laser at 650nm wavelength<br>2) Max Output Power: 4mw<br>3) 1.1 mm beam diameter at source<br>4) Momentary push button switch<br>5) Solid, heavy duty construction<br>6) Constant wave output (as opposed to pulse output)<br>7) Takes 2 "AAA" batteries (included)<br>8) Can be used for sky pointing, astronomy, projection on low clouds, signaling