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Update 04/15/2014
The service of anchor has ageboten to send a new mouse has apologized.
I think that's very good, also because it is not dealing here with an expensive product.
Service 1A'm surprised and delighted!
Hope that the new mouse now works
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Update 04/19/2014
New mouse has arrived ... and .... work!
++ Price Performance
++ Ergonomics
++ Dpi switching and power
For this price a great part. Service where very well written!
Keep what was announced in the mail and have reported themselves !!!!!
Anchor products so I can only recommend (and no, I'm not an employee or wage clerk ;-)