Summary: I've had a couple of these now (I have a spare that I keep in my travel-laptop bag as well as the one I use for my main laptop). I've always been a fan of the Kensington mice with the nano USB receiver - you can put the receiver in and forget about it, since it doesn't stick out hardly at all once inserted into the USB slot. But if you do want to take it out, you can store it in the body of the mouse itself - there's a little slot provided under the battery cover.
Summary: I bought this mouse to use when travelling - its low profile means its much easier to fit into a bag than a conventional mouse. A little bit odd to use at first if you're used to laying your hand flat on a mouse, but it's easy to get used to - the rubbery grips round the edges help make it easy to hold.
Summary: Produit bien pensé esthétique efficace plus compact que la version expert. Et pour ceux qui utilisent une souris et hésite pour aller vers un Trackball, après une prise en mains d'une semaine vous ne voudrez plus jamais travailler avec autre chose.