I would advise avoiding techhood at all costs, they will promise to make it right until you can no longer file a paypal dispute... then if you do they want you to ship it back (mind you shipping back to china is insanely expensive - was going to cost me about $100 to ship back a $120 item) so...
anything happen with this?
I would like to see a LPM with audible feedback... high pitched beep when the power goes up, low pitched beep when it goes down... so you can adjust large ions and such without looking at the meter (and actually looking at what you are doing)
it's on par with any other chinese laser... tightest DPSS I ever had was by far the Melles Griot but they used some fancy optics to make that tight beam
those marks on the front of the head were tape residue... since I knew I wasn't going to use it for a while I put electrical tape over the aperture to keep it from getting dirty...
cleaned it a bit, see attached
replied to your PM also
I picked up this laser for a beam rail project that I just never got around to... was advertised as a 750mW laser and it's doing about 770mW on my Coherent Labmaster (Coherent calibration is expired but its been pretty accurate)
asking $320 shipped