USB wired optical mouse $ 20.79 Type: Optical mouse Connection with computer: wired Applicable models: desktop Optical resolution: 2000dpi (dpi) Number of keys: 6 (keys) Interface: USB Wireless transmission frequency: 2.4GHz Whether to support ergonomics: support Adjustable resolution: three gears and below Operating distance: 1.8 (m) Working method: photoelectric Wheel direction: two-way wheel Features: Gaming mouse, ergonomics Cable length: 1.8 (meters) Color: black and red