Comfortable Grip Frees Your Wrist Wireless vertical mouse, natural posture, comfortable living, and health-conscious. Streamlined Design, Rich and Full Grip Ergonomics Say Goodbye to Mouse Hand Professional designers create shapes based on ergonomic principles. Comfortable feel and effective protection of wrist health. Three-Level DPI Adjustment Forward and Backward Buttons Achieve one-click switching through the DPI button. Humanized design, just one click is needed when browsing the web. Forward/backward operation, reducing workload easily and quickly. Three Levels of DPI Adjustment (800DPI, 1200DPI, 1600DPI) Efficient and Energy-Saving Uses replaceable battery design, easy to replace the battery. Only two AAA batteries (size 7) are needed, which is highly efficient, energy-saving, and has a long battery life. Connection Technology: 2.4G Wireless Connection Product Size: 123*75*62mm Interface: Universal USB Interface Product Weight: 140g Working Method: Photoelectric Transmission Distance: 10 meters Note: The above product parameters are measured manually. If there is any error, please refer to the actual product.