USB wireless receiver 12 programmable keys of F1-F12 Keyboard AAA Type Mouse AA Type Mouse Buttons Qty Adjustable DPI. 1000, 1600(default), 2400, 4000 Combining a discreetly powerful keyboard with an expertly designed mouse, the Dell Pro Wireless Keyboard and Mouse combo enhances your productivity. Powered by one of the industry's leading battery lives of up to 36 months, this combo is built to last. Keyboard Frequency band 2.4 GHz Programmable hot keys Yes Number of hot keys 12 Hot keys Yes Numeric keypad Yes Keyboard form factor Full-size (100%) Pointing device No Keyboard language UK English Keyboard layout QWERTY Device interface RF Wireless Connectivity technology Wireless Recommended usage Office Design LED indicators Battery Product colour Black Wrist rest No Keyboard style Straight Backlight No Features Wireless range 10 m Power Service life of battery 36 month(s) Number of batteries (keyboard) 2 Keyboard battery type AAA Power source type Battery Mouse Number of batteries (mou