Description: Designed according to the natural state of the wrist, comfortable hand feeling, effectively protect the health of your hand Support charging while using, low power consumption technology, longer battery life The charging status is clear at a glance, the charging indicator is red; it is blue when fully charged Three-speed DPI adjustment, 1200-1400-1600 adjustable, suitable for various occasions such as home, work, games, etc. Soft rubber wraps the rollers to increase comfort and reduce friction Specification: Type: Vertical Optical Mouse Photoelectric resolution: 1600dpi Number of keys: 4 keys Interface: USB Wireless transmission frequency: 2.4GHz Ergonomics: Support Adjustable resolution: three gears and below Operating distance: 10m Working method: photoelectric Wheel direction: four-way wheel Cable length: 0.5 meters Product size: 112x78.5x62.5mm/4.40x3.09x2.46inch Package Includes: 1 Set Vertical Optical Mouse Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.