Dell Mouse MS5120W, Connectivity Technology: Wireless, Interface: 2.4 GHz, Bluetooth 5.0, Movement Detection Technology: Optical, Buttons Qty: 7, Movement Resolution: Adjustable at 1000, 1600 (default), 2400 and 4000, Features: Swift Pair, Included Accessories: 1 AA battery, Width: 6.15 cm, Depth: 10.45 cm, Height: 3.83 cm, Weight: 73.7 g, Colour: Titan Grey, 3y warranty