I am selling this item because I didn't use it. Operation confirmed. *Batteries not included. The following is a product description (from the official website): The M705 Marathon Wireless Mouse offers dual-mode scrolling, a secure wireless connection, and a comfortable shape that fits your hand, as well as a battery life of up to 3 years. ● Body Size Mouse Height: 109mm Width: 71 mm Depth: 42mm Weight (including battery): 135g, including AA batteries Logitech Unifying Receiver Height: 18.7mm Width: 14.4mm Depth: 6.1mm Weight: 1.8g Specifications and Compatibility Body Size Mouse Height: 109mm Width: 71 mm Depth: 42mm Weight (including battery): 135g, including AA batteries Logitech Unifying Receiver Height: 18.7mm Width: 14.4mm Depth: 6.1mm Weight: 1.8g ● Technical Specifications Sensor Technology High-precision optical tracking DPI (min / max): 1000± Buttons Number of buttons: 5 Customization app Supported by Logi Options+ (Windows/macOS) ? Scrolling Ultra-fast scrolling Scroll wheel: Yes (rubber) Tilt wheel: Yes (with middle click) Connectivity Connection type: 2.4GHz wireless connection Wireless range: 10 meters