Ergonomic Design: Compared to similar products on the market, the vertical ergonomic mouse is designed for natural hand positioning and maximum comfort. As a result, right-handed users can experience a reduction in wrist and hand tension, improving their fitness. Ergonomic design and streamlined style provide maximum hand support for lasting comfort HQMHLCD SAL2.4GHz Wireless Ergonomic Vertical Mouse: 2.4GHz vertical mouse wireless technology, which is safer than a traditional USB mouse, has a strong anti-interference ability, more stable cursor, and solves problems such as mouse failure, delay, and interference. It ensures more accurate positioning and faster data transmission during use. Transmission distance up to 33 feet. An excellent ergonomic wireless mouse for the home office3-level DPI is Freely Adjustable: 800, 1200, 1600 DPI, you can freely adjust the cursor sensitivity according to your activity. DPI 800/1200 can be used for daily office use. DPI 1600 has higher sensitivity and is great for gaming. The USB can be stored on the back of the mouse, no need for any driver, to plug and play the silent mouse directlyLong Standby & Auto Hibernation Mode: 2*AAA batteries (not included) can support months of use, no need to worry about frequent battery replacement. The ergonomic vertical mouse goes into smart sleep mode after 10 minutes of inactivity to save energy and wakes it up with a single click. The On/Off button at the bottom also saves even more power. (Without Battery)Widely Compatible: Vertical mouse wireless is perfect for Windows 2000/2003/ XP/Vista, Win 7/8/10, Mac OS 10 or higher. The mouse is suitable for various activities, such as home, office, travel, etc. Quality Assurance: Provide you with high-quality after-sales service. Note: The side buttons do not apply to Mac OS and Apple products Make sure this fits by entering your model number.