Good packaging, very compact USB, glossy black and red border of the most beautiful effect. A self flawless grace or on / off button under the mouse. Never put into default, no dropouts, slides perfectly. One downside, which makes it lose a star: The battery cover which is in contact with the palm of the hand of the game and thus moves slightly during manipulation of the mouse. Know that your old Logitech mouse rebuke, "recovery program" on the institutional site of the manufacturer.
