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I've made a couple of (quite poor) videos of my spartan. Check out my review if you're interested: DragonLasers Spartan 1W 447nm Blue Laser review!

I would get the focusable one coz it's focusable (obviously) but also because it has a longer duty cucly, longer battery life and it's sturdier. Also it's more likely to be upspec. If you are looking for a "serious pointer" that would be better, but for a more "casual pointer" that you just...

I'd get this: LZTN - 532nm 100mW Smallest Green Laser Pointer because it's simple and small yet powerful. From my own experience the duty cycle won't really be a problem unless you are trying to cut plastic, tape etc since it's not likely you will have it powered on for even 10 seconds at a time.

I have the core and it's a good enough laser for the price, but if you want to really be sure that you have a proper laser I'd go with this: https://www.laserglow.com/GAN# Laserglow has top notch customer support so I'm sure if you just ask they could get you one that's exactly 5.0mW (and not...

The beam (to me atleast) looks perfectly round.

Nice pictures. Your camera pics up the colors really well and overall the pictures are very clear :)

Considering it's "special" in the way you got it from a contest I'd say less than 1 month.

If you do deside to get that or any other laser from lazerer remember to select the "power certificate" option. Just 5$ extra and you will know for sure how strong your laser is :)

that or the spring on the driver has loose contacts

I would get these: Laser Glasses - Red laser beam protection 600-740nm :: Laser Safety :: Dragon Lasers should work for blu-ray and red lasers :)

afaik IR by itself isn't any more damaging than lets say green meaning 5mW is considered as safe for accidental exposures of 0.25s or less but what makes it more dangerous than visible light is that its invisible so your eyes can't adjust to it properly (your pupils won't shrink) and ofcourse...

That 25mW is very lickely just IR.

I have these: Laser Glasses - UV to Green Lasers Protection 190-548nm :: Laser Safety :: Dragon Lasers and they work really well for both green and 445nm :) I've got one video showing the glasses in my Spartan review (link in my signature) if anyones interested.

If you want quality for cheap you should also take a look at LaserGlows <5mW pointers :)

That's exactly like the cheapie pens I got from greece, paid 15€/ea :p

You never know how they're gonna turn out when buying from chinese wholesale sites. I'd just spent the extra bux and get some batteries you can be 100% sure will work and be safe for the laser. This is what I use: Combo Kit: 6 RCR123A 3.0V 750mAh LiFePO4 Rechargeable Batteries with a Smart...

Sorry if I didn't understand that message properly, but from what I know the Li-ion batteries (Blue Tenergy 3.0V) have an built in regulator that drops them to 3.0V (so it's not the lasers driver that regulates it). The cheap batteries, although crap, give the laser a lot more voltage (3.7V)...

New 5mW 405nm Violet Purple Blue Ray Laser Pointer Pen | eBay

If I'd have to choose between rayfoss and dino I'd definently choose rayfoss, however there are better cheap sites too like lazerer. Cheap and guaranteed to be up to spec (they test each laser individually before shipping and for just 2$ extra will include the test results with your order).

You should also consider the DragonLasers Spartan 1W if you want a factory made one. Pro's are very good build quality etc. Con's not focusable :( You can read my review if you want :)