Don't Forget to buy a battery as well, like i did.
Or Crack open a broken Laptop Battery, they often contain more of these cells and some of them might still be really good like i did!
Build Quality is not great, but it's ok for this price.
Brightness is really good. Low is enough for me, High is really bright.
Focus works really well (at 2m distance from a wall, you can focus from 20 cm to 2,5 m wide.
Charger did not come with EU power plug so make sure you have an adapter (it's just 2 flat pins, i think UK? )
HOWEVER the Led loses it's brightness really fast ( 2 weeks of heavily use )
The first picture is at start, compared to a 1W normal led of 10$
The second picture however is the same led but 2-3 weeks later
at first it was, even half zoomed out like in the picture, twice as bright as the 1W led (not really visible on the picture but is was!)
after a while it became really weak (battery is still good!)
i can also see a light flicker in the light that, after long intensive work in the dark, is a bit hard on the eyes and is really annoying is you work with fast moving objects (like fans, they seem to stand still while they rotate really fast)
i would recommend buying a 3W ironside cree headlamp, equally as bright, also zoomable, no dim but only 10$ like the 1w led shown but brighter!