I find this wonderful mouse! I was a little apprehensive, I admit I was convinced by the reviews.
I had the 5000 model with an additional button that I have enjoyed. By 5000 against mice died after a year, a little young still ...! The receiver has laché through being connected and disconnected. For 4000, no worries with the on / off button below! The mouse handling is smooth and pleasant, a real pleasure! I am reconciled with Microsoft.
