【Seamless Switching Between Three Devices】The ergonomic mouse features Bluetooth (5.0/3.0) and 2.4GHz USB modes for connectivity. When connected via Bluetooth, The vertical mouse can effectively reduces the usage of your USB-A port (Bluetooth mode can connect to two devices simultaneously), which is convenient for devices without USB ports. To switch to 2.4GHz mode, simply plug in the USB receiver for quick connection without the need for additional software installation. With just a press of a button, you can easily switch between these two modes, enhancing your work efficiency. | 【Higher DPI & 6 Adjustable Levels】This vertical ergonomic mouse is equipped with a high-performance chip and features 6 adjustable DPI levels (4800/3200/2400/1600/1200/800) to meet your daily needs. wireless mouse upgraded technology allows this ergonomic mouse to operate smoothly on different types of surfaces. When changing the DPI, the light will flash, with the number of flashes corresponding to the DPI level. | 【Silent Mouse】This computer mouse operates quietly, allowing for usage even in quiet environments like libraries. Additionally, the vertical mouse provides nearly silent clicks, helping avoid disturbances to others and ensuring your work or study remains undisturbed (Note: Only the left and right click buttons of the mouse are silent; other function buttons are not silent). | 【Ergonomic Design】The wireless mouse's ergonomic design offers ultimate comfort by placing your palm at a near-vertical angle on the desktop, reducing pressure and pain on your wrist caused by prolonged inverted mouse usage. | 【Broad Compatibility and Low Battery Warning】The wireless computer mouse is compatible with various devices, including Windows, Mac, Chrome, and Linux laptops (side buttons are not compatible with macOS). Additionally, the bluetooth mouse for laptops enters power-saving mode (completely cutting off power) after being idle for about 8 minutes; you can awake it by pressing the right or left button. Note: We recommend using branded batteries to ensure the mouse's longevity. When the battery is low, the LED light will blink (2 AAA batteries not included). | 【36 MONTHS WARRANTY】If you encounter any problems in using the product, please feel free to contact our professional customer service team, enjoying TECKNET 36 Months Warranty (Registered Only).