Very good audio quality.

Very good audio quality. Blue light when recording is not very intense. 4GB are clearly sufficient since the battery reaches the end of life well before filling the memory. Versions with more memory (8 GB in particular) are superfluous, they have exactly the same battery.
Delivered very quickly Shopinnov (if article is available in stock), which also sends the French manual in PDF via email.

Much better audio quality than color spy key models aluminum and blue.

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Updated to 1 December 2014:

While my copy Shopinnov bought in 2013 still works fine, it bought late August 2014 (sold by the company "Cheri" of Amazon Marketplace) HS is already like that, all alone, without warning. There's even USB key, the LED does not light up, nothing works. I think there are several versions of this article (all of course made in China) of various qualities and origins and varied. And some of the same external appearance are of very poor quality. The audio quality was impeccable yet ... when it worked.

In short: what recorder "USB" to choose? Not those sold by Cheri anyway.
But which to buy among the others ???