DELL SILENT MOUSE MS355, Pointing Device Connectivity Technology: Wireless, Pointing Device Wireless Technology: Bluetooth/Radio Frequency, Wireless Operating Frequency: 2.40 GHz, Movement Detection: Optical LED, Movement Resolution (dpi): 4020, Adjustable Movement Resolution Detail: Adjustable from 600 to 4020 DPI, Number of Total Buttons: 3, Scroller Type: Scroll Wheel, Pointing Device Features: Silent, Ergonomic Fit: Symmetrical, Bluetooth Version: 5.1, Polling Rate: 333 Hz, Maximum Battery Run Time: 3 Year, Product Colour: Black, Height: 38 mm, Width: 60.3 mm, Depth: 104.5 mm, Weight (Approximate): 67 g, Operating System Compatibility: Windows 7, Windows 8.1, Windows 10, Windows 11, Ubuntu 18.04, Red Hat Enterprise Linux 8, ChromeOS, Android, Mac OS, Post-consumer-waste: 54%, Limited Warranty: 3 Years