Abstract: A computer mouse is described, comprising a housing (1) which comprises a support surface (2) and a jacket surface (4) for finger support, which jacket surface protrudes upwardly in a tapering manner from the support surface (2). In order to provide advantageous handling conditions it is proposed that the jacket surface (4) is arranged in a conical way with generatrices extending substantially in a straight line and has a height of the width of three fingers for the purpose of supporting a thumb (5) on one circumferential side and an index finger and a middle finger (6, 7) on the opposite circumferential side.