Reliable 2.4 GHz wireless connection

Single nano wireless USB receiver for both keyboard and mouse

Adjustable tilt leg and spill resistant keyboard design

Optical sensor and 1600 DPI resolution

Low-profile 2.5-zone keyboard layout

Battery: 1 x AA & 1 x AAA

Up to 15 months battery life for keyboard(may vary based on usage)

Up to 18 months battery life for mouse (may vary based on usage)

Reference: 4X31N50708