Ergonomic Design: Ergonomic mouse adopts scientific vertical design, allows the wrist to bend naturally ergonomically, adjusts the palm to reduce elbow and arm movement, making it easier to work and study. 2.4GHz Wireless Connection: Vertical Ergonomic Mouse uses 2.4GHz wireless technology to ensure a stable Bluetooth connection. Technology: Equipped with TECKNET’s advanced optical tracking technology, you can drag the mouse accurately and quickly. Provides precise and intelligent cursor control for many types of surfaces, such as flat desktop, frosted glass, A4 paper, fabric, etc. Adjustable DPI: USB receiver to help your mouse and computer connect wirelessly, plug and play.