The Junior Mouse is just right for little hands to grasp at about half the size of a standard mouse the Junior Mouse allows kids to learn all the functions of a grown-up model in a child friendly manner The coloured buttons are there to help children still trying to sort out their left from their right the wheel button is also coloured so that it easily stands out The Junior Mouse includes a special anti-bacterial coating called NANOARMOUR which kills a widespread spectrum of bacteria virus fun (Barcode EAN=5060055461664)