Nixht bad but with potential for improvement.

I am now working about 6 weeks so. The adjustment period was relatively short.
In principle, ergonomic shape only suitable for small to medium sized hands max. Glove size. 7
Arranged particularly practical and inexpensive, the DPI button to change the pointer speed in 3 stages.
In concept, the 2-to-use with the thumb buttons with which z. B. are a browser's forward and back-switchable, well. The thumb is suitable for this downright, but the key spacing is much too tight, so that if the user does not have a particularly narrow thumb, often carried out unwanted clicks.
The idea of ​​integrated wrist rest is very good but not optimally implemented. Decisive for a pleasant relaxed working is only guaranteed when the mouse can be pushed all the way forward with relaxed hanging arm without the part of the forearm, which is located behind the heel of your hand, constantly chafe against the edge of the table or the Mouse. Whether that will be the case, each user can test yourself without a mouse before a purchase.
The problem would be easily solved if the mouse, including the wrist rest would be about 10 mm higher (extension downward).
The ribbing on top of the wrist rest, I feel particularly after prolonged work as unpleasant to painful. Since the entire burden of the hand and the arm constantly pressing on the ribbing created this irritation.
Here a smooth bearing surface should be chosen instead, this design gimmicks.
After eliminating the shortcomings mentioned a very good mouse might arise in fully relaxed work remains an empty promise.