Product Name: USB Mouse with Water Print and Super Mini Size Model NO.: MS-M42 Application Type: Fashion Style: Computer Number of Buttons: 3 Direction of Roller: Tilt Wheel Ergonomics: Symmetric Size of Mouse: Small DPI: 1000 Positioning Principle: Optical Connection Type: Wired Compatibility: Desk PC Size: 81*48*28.5mm Housing Case Material: ABS Plastic Port: PS2 or USB Feature: Super Mini Size Trademark: TYSHEN Transport Package: Color Box or Blister Specification: CE, ROHS Origin: Shenzhen, China HS Code: 84716072 Product Description 3D Optical Mouse High resolution of 1000 CPIHigh-precision optical sensor Work on most surfaces, include wood/plastic, etc.Cable length: 135CMInterface option: PS2, USB, U+PSupport Windows 9X/2000/Me/XP/NT, Win7/Vista, etc.