Logitech MK270 Wireless Keyboard and Mouse Combo Meet all your computing accessory needs with the Logitech MK270 Wireless Combo. This keyboard and mouse combo features a tiny nano receiver and Logitech Advanced 2.4 GHz technology. Thanks to the long battery life, there is no need to change batteries. Keyboard Product Details: Dimensions: 149 x 441 x 18 mm Weight: 498 g Adjustable keyboard height 10-key numeric keypad Keys Type: Deep profile Caps Lock indicator light Power button 2 AAA batteries Battery life: 36 months (3) Mouse Product Details: Dimensions : 99 x 60 x 39 mm Weight: 75.2 g Sensor technology: Advanced optical tracking Number of buttons: 3 (left/right click, middle click) Scrolling: Line by line Scroll wheel: 2D optical Connect/Power supply: On/off switch 1 AA battery Battery life: 12 months (3) Wireless range: Up to 10 m (1) Compatible with Windows 7, 8, 10 or later, ChromeOS (1) Wireless range depends on usage and environmental conditions . (2) Tested under limited conditions (maximum 60ml liquid). Do not immerse the keyboard in liquid. (3) Keyboard and mouse battery life may vary based on usage and environmental conditions. (4) Based on independent unit sales data for all models of the MK270 family of wireless sets in key sales markets: CA, CN, FR, DE, ID, KR, RU, SE, TW, TH, TR, UK, US (Apr 19-Apr 20). Retail only. (5) Based on independent unit sales data for Logitech mice and keyboards in global sales markets including CA, CN, FR, DE, ID, KR, RU, SE, TW, TH, TR, UK, US (July 2019-July 2020). Retail only. (6) Clicking and typing noise reduced by over 90% compared to Logitech MK270. Left-click and typing noise level in dBA measured by an independent laboratory at a distance of 1 m.