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Pros:
Build quality, ease of use, two independent channels.
Cons:
Packaging — a flimsy cardboard box — turned into a shapeless mess. It got absolutely battered during shipping. The photo shows 4 sets of attachments, but there were only two in the box.
Comment:
The device body is extremely durable because it survived a really rough trip and arrived completely undamaged. It runs quietly, even at full speed. Suction is good, it managed to lift a computer mouse. If you don't need both channels at once, you can turn the second one off — the device is easy to take apart.
