Received one of 2 units I purchased very fast and am pleased with the results.
No point posting pics as there's enough allready here by seller.
Packaging was good (would have had to stomp on it to damage the unit).
Output is 92mw with ordinary alkalines and the response to higher voltage with standard lithiums or a single 10440 with spacer is basically the same.
Pen physically looks nice and I was told that the pot wasn't adjusted (have no reason to bother taking it apart and it is much more stable than a normal $5 cheapo).
I had an extra 532nm sticker but because of the looks, can't stand to put it on. Much better all black.
From what I have seen, actually purchasing one of the modules and installing in a pen is much better than the crap shoot of cheapos on ebay.
Currently have (2) 532s on the way in a couple weeks (China) from the same abay seller (not Presentteck) that sells way overspec units in the standard 3 color pack. The last 2 packs I received, the 532s were 55mw, and 76mw peak but very unstable with relatively quick drops in power (not unexpected). The 405s were both 92mw stable and the 650s were 101 and 120mw stable as expected using standard alkalines. Will be interesting to see what kind of output his "highest output" 532 pens test at.
Purchased the last one listed here and I'll report back when it arrives (likely Friday).
Again, the deal here is a better/more stable module and a clean looking host.
+1 to seller
By the way, own 40 pen type units so I certainly have others to compare to.
Looking forward to the hot glue laminated wood host laser thingy... It will be able to catch itself on fire
Single use only
Edit:
Tested IR is about 10%. Ebay pens are generally much higher.
<3