The design and build quality of this mouse "special tablets" are impeccable:
-The Sides of the mouse aluminum.
-The Left and right click buttons are real physical buttons (It begs the question, seeing the photo).
-The Sliding surface (smoothly) was designed for use in mobile (tablets).
-The Sensors operate on any surface (cloth ...).
The holding in this unusual hand mouse (between the thumb and ring finger) does not break problem. On the contrary, it's very convenient mobility. The palm of the hand using sliding surface ... This is part of the concept!
The missing star is only due to too high sale price for a mouse ... The Bluetooth accessories are always more expensive. But at least there's no dongle to connect!