Introducing the CHYI Ergonomic Vertical Mouse! This wireless 2.4GHz optical mouse offers ultimate comfort and precision for both left and right-hand users. Its unique 3D design is shaped to fit the natural contours of your hand, reducing hand fatigue and improving posture. Equipped with 5 buttons and an adjustable DPI of 800-1200-1600, this mouse offers smooth navigation and quick response for browsing, gaming, and work. Its sleek black color and compact size make it a perfect addition to any desktop or laptop setup. The CHYI Ergonomic Vertical Mouse is easy to use and comes with a USB interface for plug-and-play convenience. It is CE certified and powered by a reliable battery, ensuring long-lasting performance. Upgrade your computer experience with the CHYI Ergonomic Vertical Mouse. Whether you're a gamer, student, or professional, this mouse offers a comfortable and efficient way to work and play. Order now and take the first step towards a healthier and more productive lifestyle!