This mouse does everything you need it to do. The small receiver is a huge plus and battery life is great. It fits well in the hand but can feel small at times. The buttons and scroll wheel respond really well. Performance The mouse responds well at varying distances and surfaces. I have not had any problems with it yet. Durability It seems to be shock-proof. My child has thrown it on the floor and the battery door will pop off but that is about it. Very happy with it. Design I like the sleek color scheme and placement of the side buttons and scroll wheel. Very well designed. Comfort It is a little smaller than the mice I used before so it took some getting used to but it generally fits well in the palm and the contours for your fingers are well placed.