A beautiful mouse. To watch beautiful. Who uses them more quickly notices the weaknesses: 1. The mouse buttons work inaccurate. Unfortunately, the mouse does not own mouse buttons, but the mouse is noted allegedly pushing down on which side the mouse. Sounds good, but rarely works, you need a settling-in period in order to endure the halfway and has almost brought me some nervous breakdowns. 2. Scroll Wheel or rather mouse ball. Also looks nice, unfortunately, after a few months if you want to or not promoted so much dirt inside the mouse ball scanning, which is the mouse eventually be thrown away. In my case I can only scroll still up to 7 months, down no longer funzt already long, and the mouse can not be opened (brilliant plastic click mechanism) without them afterwards no longer be able to close, so that the mouse is only scantily but on a shirt or on a sheet by rubbing something can clean that no longer help soon. Conclusion: Chic design, all cheapest processing despite expensive price. The mouse is for 8 months but only what the trash if you need the mouse wheel. Too Bad.