Kato Soundbox Question

[Beady]

What's the difference between the Kato Soundbox 22101 and 221011? I assume the extra digit represents some sort of improvement, but is it anything substantial?

Oh crap!

 

[Chevron_GATX]

I have no idea, but I found this posted on another forum:

KATO Sales Meeting - Feb. 17, 2015 Here is the summary from KATO sales meeting for February.
Business Update "SoundBox can't be used in Europe due to non-compliance of CE standard. Now they are developing CE compliant model."