Type: Wired Interface Type: USB Style: 3D Hand Orientation: Right Number of Rollers: 1 Number of Buttons: 7 Power Type: Rechargeable Operation Mode: Opto-electronic Gross Weight: 190g Time to market: May-12 DPI: 2400DPI Color: Black Feature: ( 100% brand new and high quality) Product Name: Silent Wired Game Mouse (PS: Left & right button silent) Breathing Light: Changeable Buttons: 7 buttons with scroll wheel. The Max DPI: 2400 DPI. Ajustable DPI Switch: 1600-2400-3200-5500DPI Switch Life: 5 million cycle. Size: 130*86*39mm Compatible :Windows XP, Vista, Windows 7/8, MAC... User for: The high-end players & gaming professional players.