Product Name: New Slim Wireless Mouse for Year 2010, 4 Buttons, 800/1200/1600 Dpi Model NO.: MSX-C8 Application Type: Business Style: Computer Number of Buttons: 4 Direction of Roller: Tilt Wheel Ergonomics: Symmetric Size of Mouse: Small DPI: 800/1200/1600 Positioning Principle: Optical Connection Type: Wireless Compatibility: Desk PC Size: 9.9*5.9*3.2 Cm Material: ABS Battery: 1*AA Feature 1: USB Nano Feature 2: Office Design Trademark: TYSHEN Transport Package: Color Box or Blister Specification: CE, ROHS Origin: Shenzhen, China HS Code: 84716072 Product Description 2.4GHz Wireless Mouse4 Buttons800/1200/1600 DPIPrivate ModelCompliant with Windows9X/2000/Me/XP/NT, Windows 7/Vista, etcWorking Distance: Max upto 10metersBandwidth: 2402-2480MHzOperating current&Voltage: ≤ 25mA, 3VAuto shut-off function to maximize battery life