The first concerns were already unpacking - the manual was very taciturn and partly in English. And no CD in sight. As we have read here in the reviews of a detailed and illustrated instructions, we turned to the dealer, these have been referred to the manufacturer, since it (traders) have no further instructions. The manufacturer (Celucare) but we dismissed on the grounds that it can supply only to customers who purchase the product through him, guides available. Because with such a product a detailed and trustworthy guide in our view is an absolute must, we have returned the device again. At least here the dealer has gone through as expected.
Meanwhile, we have acquired the same device from the official distributor and of course also get the said CD with PDF manual.
To function: we only have the "drop test" performed. This is us happened pretty weird since the drop is not behaved as expected. With our new "officially" acquired unit, the droplet behaves visibly different, and so, as you would expect from a drop to a sonotrode expected (horn = transmission unit, the electrical high frequency vibrations to the application surface electromechanical transfers).
Conclusion: Therefore, we can not be more than 1 star for our device assigned.