Lenovo Brand Supported Operating Systems: Windows 10 and Windows 11 Power Requirements: One AAA battery for the keyboard, one AA battery for the mouse Battery Life: Up to 12 months for the keyboard, up to 6 months for the mouse (may vary depending on usage) Color: Black Mouse Sensor: Red Mouse Resolution: 1600 DPI Two-Way Scrolling (Up/Down) Number of Keys: 3 Key Lifespan: 3 million keystrokes (Left/Right) Keyboard Layout: Three-zone layout Language Layout: US English, Arabic X-Mount Key Spacing: 19.05 mm (0.75 in) Y-Mount Key Spacing: 19.05 mm (0.75 in) Keyboard Key Lifespan: 10 million keystrokes Keyboard Length: 452 mm (17.80 in) Mouse Length: 99.8 mm (3.93 in) Keyboard Depth: 124.9 mm (4.92 in) Mouse Length: 59 mm (2.32 in) Keyboard Height: 19.8 mm (0.78 in) Mouse Height: 39 mm (1.54 in) Product Weight with Keyboard: 416.3 g (14.68 oz) (with battery) Mouse Weight: 75.5 g (2.66 oz) (with battery) Package Dimensions (L x D x H): 535 x 166 x 44 mm (21.1 x 6.5 x 1.7 in) Package Weight: 705 g (24.9 oz) / 574 g (20.2 oz) Connectivity: 2.4 GHz Wireless Hardware Requirements: Computer with a USB-A port