4.0mm 5mW Red Laser Module (3.5V~4.5V 3~5mA)

Pros: hi come to my house in 21 days, working (hint use 3 clock cells of 1.5, gives 4 mA) and love is strong and very small, comes with adjustable lens and the tip, I loved it.
send photos later.
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oi chegou em minha casa em 21 dias, funcionando (dica use 3 pilhas de relógio de 1,5, dá 4 mA) adorei e é forte e muito pequeno, já vem com regulagem e lente na ponta, adorei.
mandarei fotos depois.

Cons: Product.: Very sensitive, and the wire is weak, it had 2 x soldering, but I put hot glue to hold better.
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Produto.: muito sensível, e o fio é fraco, tive se soldar 2 x, mas coloquei cola quente para prender melhor.

Other: hi come to my house in 21 days, working (hint use 3 clock cells of 1.5, gives 4 mA) and love is strong and very small, comes with adjustable lens and the tip, I loved it.
send photos later.
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Product.: Very sensitive, and the wire is weak, it had 2 x soldering, but I put hot glue to hold better.

Pros: I've been playing around with these for the last couple of days. This is what I found: * The description (if you can call it that) (3.5V~4.5V 3~5mA) is not entirely correct, especially the part about current. I ran it from 3.3V regulated with 3mA and the beam was barely visible. At 35mA it's comparable to other 5mW pointers I have. * There's a 270 Ohm resistor on board, so you can wire it directly with a power supply. I used 3.3V, but I think that 3 x 1.5V cells would do just fine.

Cons: * The previous review mentioned adjustable beam and a lens.. nothing like that here. * Also the beam has a visible halo around it. This is not really a problem with diode as a simple lens would fix that.

Other: The bottom line is that it pretty much works as expected. For this price you probably wouldn't find anything better.

Pros: The laser modules are very good for the price. They will run on as low as 3v and I have tested them to run on as high as 6v. My dog loves to chase this laser--It provides hours of endless fun.

Cons: I gave it a four on build quality because the wires were not soldered on very easily. ---The wire on the positive and negative leads come off very easy.

Other: For the money, these lasers are very good. If you like playing with lasers then try one, it less than three dollars, so if you don't like it, it's not that big of a loss.