It looks to be a Air-x knock-off. This means a relatively high-speed generator
that does OK in higher wind
, but not so great in lower wind. Their were improvements to the blades that made them much quieter, by putting little cross-hatches on the leading edges. This causes turbulence that significantly reduces noise
. Those blades do not look to have this modification. They would not be silent, or even near that. When they are working in high winds, they can get quite noisy. And finally, for some people the noise is unbearable, like nails on a chaulkboard. Not me, but apparently others. I have met people that will not anchor
I have no idea about the build quality, just making some general observations on the design. IMHO Superwind, Silentwind or the D400 are much better choices. Thay all come at a much higher price
You may be able to buy the silent blades if the design copied the blades especially the mounting. We did that with an old, original Air-X, and it made a big difference in the sound.