Let us know if it gets through customs. The 5mw limit has been enforced in the US.
Some reading:
My hope is they won't notice it with other things. ;) I mean since it doesn't have a battery in it, then it must qualify as a part not a completed laser. :P
My fingers are crossed for you! Good luck.
Just got the O-like power rock 100mw green in the mail today!
Best laser I’ve purchased, great great quality, and from reviews, these lasers come over spec. It is water proof too and I ordered the filters for it which make it a really entertaining laser!
Came with a holster, battery and charger and looks like a sunwayman. Clicky has a great strong feel to it too.
Cant say enough good things about it.
Bigtime happy customer for o-like.com!
A revival
I have three 18650 battery laser pointers coming from FastTech and wondered if any member knows about them and whether they have proper IR filters installed. Also if any where near claimed output. I probably should have asked before ordering but I gave into temptation when I saw them listed. I have had a 30 mW green two AAA laser pointer for years and have not blinded anyone. Originally bought for use during astronomy lectures under night skies for pointing out constellations and astronomical objects. I do have laser safety glasses on the way too.
https://www.fasttech.com/product/1591400 Green 200 mW.
https://www.fasttech.com/product/1591403 Red 200 mW.
https://www.fasttech.com/product/1591404 405nm Blue Violet 100 mW.
If the lasers do not have a proper filter I figure that I can possibly machine an adapter for the Baader ir and uv cut filter, the 1.25” size.
This little laser post deals only with SD 30x, as in SD 301, SD 302, SD 303. I have held eight or so, I think all advertised as < 100mw.
A product page typically shows them labeled (for example) ‘SD 303’, but you will likely receive one labeled ‘LASER 303’. Sometimes they arrive without keys, so I have made a few fairly easily. I’ve never seen one with O-rings. There is some variance in the brightness, but I consider them all quite powerful. Less than half a second to burn tiny holes through black or grey polyethylene grocery bags. Not a child’s toy, they should be treated as dangerous - I expect one would quickly damage an eye. Whoever points them at animals is an anus. Not powerful enough to do anything useful like cut pipe; far too powerful for a classroom pointer. I don’t know any practical use.
That said, I claim them among the best money I’ve ever spent. Handled CAREFULLY, they can amaze and entertain a group for ten whole minutes. Maybe twenty minutes if there’s beer.
The main tube is threaded two sections, so you can use 1xCR123A primary, or 1x18650. However otherwise decribed, the button side switch is momentary on, which is good for safety. The laser stays on while you press the button, but if you fumble or drop it, the laser turns off. I imagine minimal heat-sinking, so have never kept one on for a full minute. A knob on the business end can be unscrewed/extended to defocus/spread the beam up to 2 to 3 degrees to make a spot. Green appears the most luminous, then red, then blue.
For now, I’m convinced the model designators are like this:
301 = knurled tube
302 = smooth tube
303 = 301 plus extra knob on the end, which is a ‘filter’
I recommend the 303. Removing the ‘filter’ makes a 301. Leaving it in place makes things safer around people or indoors. Variously described, this ‘disco filter’ attachment spreads a broad field of four zillion small images - the best is simply some kind of dot or star - others available are hearts, smiley faces, etc. Rotating the filter makes the images coalesce into half a zillion brighter ones. Maybe useless except as huge entertainment. Wait, I mean for the kids.
So far, all the less than $10 ones seem out of the same grab bag as the more expensive. I’m still waiting for my first buy of green, red, blue from GearBest. $7.64 each.
I will not trust any notion that my cheap lasers are blocking whatever IR component.
Anyway, the longer 303 fits well in this pouch
Definitely NO IR filter in any of the cheap lasers (under $200). You also will have probably 100-200mW of power however about 50%+ is pure IR so once you filter it you are left with a cheap 40-100mW 532nm laser.
650 and 405 dont produce any IR is no need to filter those at all. 532nm is made purely from a DPSS IR process. Its hit or miss on their actual power. I know some people get them over spec but majority are way under spec and just junk. Dont be afraid if they die a few months into using them, thats the name of the game with cheap lasers. Also about 50/50 chance they will be DOA due to shipping mishandling. Lasers are very fragile and just dropping them can kill a diode like thats
Richwouldnt, very unlikely that it has an IR filter, ones that do have a filter will mention it. Only green produces IR. There is no UV.
405nm may look relatively dim but it is powerful and can easily do vision damage if you get a false sense of safety due to the brightness. Even if it is the same mW power as others the 405nm color is just less visible to our eyes.
Of course keep them out of reach of children or anyone who might act like children.
My second batch of advice is to not listen to a word “two €€” says. That extra knob that is a “filter” farthest thing from the truth. He doesnt know what he is talking about and if you do want to talk to people who do know lasers then go join us on laserpointerforums.com
Eeek! Filter truth! Thanks, MileyLoud! I improperly put filter in quotes, referring to the many instances of product descriptions using that. I had forgotten that the quote marks indicate me as the authoring source. Good catch! And I should have included a thorough lecture on etched glass counter-rotating diffraction gratings - I’m working on that now.
I know it sounds crazy, but these are sometimes called kaleidoscopes, even on the erudite laserpointerforums. Why would anyone use such an informal, misleading term for a device this serious? I respect that you’ve also set those farthest untruths right. It shows that you are ‘not’ just an hysterical doofus, and I will surely believe whatever you say.
I trust your boyfriend gratefully hears your corrections while driving, dining, picking out clothes, etc.
Thanks for being you, MileyLoud!
two¢¢, he never knows how to be civil. 
Beer is good. Didn’t know about the rest - thanks, Pov
Here’s some info on three more SD 303 I recently received. I had hoped the good guys at GearBest would send decent ones - not so much. Still seems they all come from the same grab bag.
Blue - DOA. The keyed switch tailpiece is bad. Swapping one from another laser makes it work. Should be called purple or disappointingly faint purple. There’s just not much luminance, and I recommend against buying them.
Red - Works fine. Genuine red color. Maybe half the apparent luminance of green. Makes a good second one.
Green - Works fine now - had to fiddle with switch contacts. The green beams are strong and brilliant. Whoever is interested, I recommend buy this first.
Protect all eyes.
Overall length of these is about 1/2” shorter than others I’ve seen, so the pouch linked above doesn’t fit as well.
SMH at how little you know, especially when it comes to 405nm
Not to be rude but id love to be your eye doctor in 30 years just to see how bad your vision is going yo be
Hi.
I bought a SHARP EAGLE ZQ-LA-301 445nm blue laser from Bang good, http://www.banggood.com/SHARP-EAGLE-ZQ-LA-301-Blue-445nm-5MW-Buring-Laser-Pointer-p-1014556.html , but while I saw a decent beam in the night sky,(yes, no planes passing by),when I tried to play,burning the usual things,I saw nothing.Neither paper,nor plastic.Not even a scotch tape.
As it is declared as having 1300-1500 mW,I think it is a fake 1.3mW,and I am ready to return it to the store.
Any suggestion please?Does somebody knows these lasers?
Do you have laser glasses? Link to them? It looks like that laser has adjustable focus. Focusing it to a close range point might help.
Without a LPM laser power meter no one can really verify the power. This is why sellers can just make up a number. As long as it’s bright, a lot of buyers will be happy.
i hope no one shines a laser at any animals.
where do you find protective glasses ?
As Halo said above:
“405nm may look relatively dim but it is powerful and can easily do vision damage if you get a false sense of safety due to the brightness. Even if it is the same mW power as others the 405nm color is just less visible to our eyes.”
Note that the further you go into the blue end, the more energy the photons carry — so the eye perceives less and less brightness while the photons are doing more and more damage.
https://www.google.com/search?q=energy+electron+volt+molecule+damage+retina
You can see where that leads.
Or can’t.
Thank you for that information Hank. Lasers are no laughing matter. They may be fun to jack around with because they look so cool but you WILL NOT get a second chance if it passes by your eye. Could be a reflection from a mirror that you did not know was there, glass vases and the like, bottles and so on. BE AWARE OF YOUR SURROUNDINGS BEFORE JACKING AROUND WITH THEM.
+1 