This is an accessory for an HP laptop purchased in mid-November. Includes instruction manual (the manual has water stains from being in a bag in the rain, but the main unit is new). Used only once to confirm operation. I am selling it because I will continue to use the mouse I have been using. Includes AA batteries. HP black wireless mouse, with 3 buttons and a wheel, and an easy-to-use design. - Brand: HP - Color: Black - Type: Wireless - Number of buttons: 3 - Wheel: Yes Thank you for looking.