Welcome to the store! 1. Ergonomic Design: Place your hand in a natural handshake position at a unique 60-degree angle. This vertical mouse is based on ergonomics. It effectively reduces wrist strain and user muscle pain through a natural handshake. 2. Efficient and Sensitive: Features 6 practical design buttons, with 800-1200-2400-3200 dpi adjustable mouse movement speed. High sensitivity allows for accurate tracking on various surfaces. 3. Silent Design: The vertical mouse adopts a button mute design, making it more suitable for libraries, bedrooms, offices, airplanes, and other public places. 4. USB Plug and Play: The vertical mouse supports USB plug and play and is suitable for PCs, laptops, and other devices. 5. Support System: Compatible with Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 98, OS X, Windows ME, Windows 8, Windows 10, etc. Item Type: Wired Vertical Mouse Material: ABS Number of Buttons: 6 DPI: 800-1200-2400-3200 Product Size: Approx. 140 x 75 x 80 mm / 5.5 x 3.0 x 3.1 inches 1 x Wired Vertical Mouse Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!