1.[BROADER THUMB REST DESIGN]Upgraded much wider thumb rest area, designed for better feeling to give comfortable support to the whole palm and fingers, reduces the pressure and tension brought by long-time work to the hand, and improves the efficiency of work 2.[BATTERY POWER DISPLAY AT A GLANCE]Upgraded visible battery indicator on the top of the mouse design, at a glance, you'll know the remaining battery, as well as an indication of when it's time to recharge. Say goodbye to power outage anxiety and give you a sense of security 3. TRI-MODE CONNECTION: Bluetooth 5.0/4.0 and 2.4G USB connection. You can switch to any mode by clicking the mode switch button located at the bottom of the mouse. The indication lights of Bluetooth 5.0, Bluetooth 4.0 and 2.4G USB are green, blue and red, respectively. Once you complete the pair of Bluetooth or insert the USB, you can ly switch to each mode and the maximum operating distance of each mode is 10 meters 4. ERGONOMIC DESIGN & 3 DPI: The Bluetooth mouse is designed for right-handed users for the hand feeling. Six efficient buttons and three adjustable dpi levels (1000/1200/1600) that allow you to ly control the mouse speed