To check

[brs]

http://store1.up-00.com/2016-06/1465436245561.png

http://store2.up-00.com/2016-06/1465436400323.jpg

Hello my friends
that I've found the Internet is said to detect laser Metals Question Does that suggest to detect
led red all matel
led green gold
led ............
TR BC108.
??????

[brs]

Hello my friends

[WM6]

Your eyes are better discriminator between gold and all metals than those laser based.
And detecting abilities are practically the same or even better if you use binocular telescope.