The Adesso Wireless Ergonomic Keyboard & Optical Mouse offer users two advanced input devices with ergonomic design, multifunctional features and a wireless range of up to 30 feet. The design of this keyboard with splitted key zones and gently sloped encourages natural position of hands, wrists, and forearm in maximum comfort for long use. The new chiclet keycap with its larger keycap surface makes typing easier and blends in with the keyboard to make a stylish design. The included wireless optical mouse not just provides comfortable ergonomic design but also equips with a DPI switch for changing resolution ( 800/1200/1600) and two Internet navigation buttons. Features This keyboard and mouse work at any angle with a range of up to 30 ft. with no wires to get tangled. The design of this keyboard with splitted key zones and gently sloped shape. The Built-in Scroll Wheel makes scrolling within documents a breeze. Quickly and easily adjust DPI resolution. Slim Multimedia 2.4GHZ Wireless Ergonomic Desktop Keyboard, with Low Profile Chiclet. Specifications Battery Size Supported: AAA. Keyboard / Keypad Host Interface: USB. Pointing Device Host Interface: USB. Pointing Device Connectivity Technology: Wireless. Pointing Device Wireless Technology: RF. Movement Detection: Optical. Movement Resolution: 1600 dpi. Scroller Type: Scroll Wheel. Ergonomic Fit: Right-handed Only. Keyboard / Keypad Connectivity Technology: Wireless. Keyboard / Keypad Wireless Technology: RF. Number of Keys: 104. Hot Keys: Home. Localization: English ( US). Keyboard / Keypad Color: Black. Pointing Device Color: Black. Keyboard / Keypad Height: 1". Weight: 3.15 lbs.