Sucks and Bigly- Poor Ergonomics- Awful Left/Right Buttons (only active at far end of switch necessitating a very forward/awkward grip)- Sketchy Controls inc Flakey Wheel/Button (ie cheap construction)- Lesson LearnedIve used computers since the early 80s and this is hands down the worst mouse Ive ever encountered. Any sand/dirt will act like sand paper if trapped between the two - If using the metal clips on the door frame, tighten one side as much as you can and do not touch it after you tighten the other side. Auf jeden Fall aber eine Nummer größer bestellen. When the Flip breaks the unit is worthless. Maybe a little hard to get a grip and open it, but I noticed it doesnt pop open and fling your earbuds across the room when you drop it, so its good. I exchanged it and was assured it was in working order. I would definitely recommend. The sound stage is a tad bit smaller than what I would have liked, but that doesnt take away anything from the experience. Kennt man vom gewohnten Modell so nicht! I fastened the mount and speaker on the down tube.