Logitech MK270 Wireless Combo delivers reliable, long-range 2.4GHz wireless performance with up to 10m connectivity via a nano USB receiver. The full-size, spill-resistant keyboard features a number pad, eight media shortcut keys, adjustable tilt legs, and two AAA batteries offering up to 36 months of life. The compact, ambidextrous mouse employs 1000dpi optical tracking runs on a single AA battery for up to 12 months and stores the USB receiver inside. Both devices include on/off switches and are backed by a 3-year limited warranty.