Product review (4 stars): So far, the product works well but I'm not impressed with the design
My wife bought this on a lightening deal last year, and I just got around to setting it up. The manual is actually written in very good English, not the horrible random characters that frequently accompany Chinese products. It took about thirty minutes to read the manual, unpack, clean, set up, fill with water and start using.

The product is almost all plastic inside, though it appears to be decent quality plastic. Here's how it works:  The ice maker fillis the top compartment with water. The "large" cubes are made by filling the compartment higher, and a lower level produces the "small" cubes. There are nine or ten metal rods that protrude down into the water. The rods cool, and the water freezes around the rods. After a few minutes, the tank drains, a rake retracts and the rods heat up, dropping the ice that has frozen around them.

Here's what I don't like:
--The inside is not cooled, so on a warm day the ice melts (but not as quickly as I'd expect).
--The ice cubes are partially hollow, shaped like those erasers that fit over the top of a pencil. This creates ice with a surface area nearly double than that of a cylinder.  The ice will cool a liquid faster than a straight cylinder.  If you're drinking water, this is acceptable, but not if you're drinking anything else.
--The water tank is on the bottom, and the finished ice is in a tray on top. Heat rises, so the air inside circulates backward--warm air rising toward your ice and cooler air down onto the water.  The design should have a tank on the side, in my opinion, though there is one benefit---the melting ice drips through slots in the ice tray into the water storage, so there isn't drainage.

After the first few cycles, ice has much thicker walls, presumably because the water it uses is getting. It appears to me that the best thing to do is to run it for a while (maybe an hour?) then empty tthe tray into a container put it tnto the freezer.

I noticed that some reviewers are complaining that mold (mildew?) develops inside. According to the manual, you should empty the tank after 24 hours. I think I'm going to empty it nightly, wipe it down and leave the cover open.

At first glance, this appears to be worth the money we paid for it. I'll try to remember to update this review after using the icemaker for a while.

Update 1::  9/3/17. After I had it on for about two hours, I went to check it and found that the "Tray Full" light was on and, indeed, the tray was full.  I removed the ice and poured it into a container.  The cubes on the bottom were half-melted, as I thought they would be.  I left the machine off for fifteen minutes (the manual says to wait three minutes before turning it back on to allow the coolest to settle), then turned it on to make some more. Fortunately, I watched it instead of walking away.  The machine began pumping water into the ice maker, but didn't stop when it was full. Instead, the water started overflowing and dropping back into the reservoir, never turning off. I turned the machine off and checked the date we purchased it (December, 2015) to see if it was still under warranty (nope). I opened the door to let it dry, in the hope that it might start working again.  I looked inside to see if I could clean or clear the water-full sensor, but I couldn't find the sensor.  I'll contact Amazon to see if I have any hope of a refund, but I have little hope. I'm going to take a picture of the ice cubes it made and my wife and I will each have a $50 glass of ice water.