It is not a cheap toy, but the features go ok for that price. Solid case, the knobs could be more user friendly, also the lighting of the knobs, where you cannot tell from time to time if they are lit or not. The knobs are quite on the 'hard push' side, rubber made.
All in all the device is a great add, although the arpeggiator is not what you'd expect. Maybe in future firmware updates an improvement may be released.
Otherwise the handling is intuitive, but I would recommend to look for video tutorials on the web because the manual is quite modest regarding information on how to get the sequencer working in depht..
A modern hardware sequencer though. Recommended.