The Adesso 2.4 GHz Wireless Desktop Keyboard & Mouse Combo offer users two supreme input devices with a wireless range up to 30 feet. The wireless keyboard features 14 hotkeys for quick access to your media player controls, email, Internet browser and other common applications like My Computer, Mail and Calculator. The keyboard uses quiet membrane key switches that provide a more quiet and tactile response. The wireless mouse is equipped with an optical sensor that is more sensitive and accurate than a traditional optical mouse. This combo is ideal for use in your office or home. Keyboard Specification:Keyboard Layout: 104-Key US layoutKey Type: Membrane SwitchesConnection: 2.4 GHz RF Wireless TechnologyWorking Range: 30 feet (10m)Battery: (2) AAAIndicator: Low BatteryMultimedia Hotkeys: 8 (Media Player, Volume Down, Volume Up, Mute,Play/Pause, Previous Track, Next Track, Stop)Windows & Internet Hotkeys: 6 (My Computer, Search, Calculator, Mail, Home, Favorites)Life Cycle: 5 Million KeystrokesDimensions: 17.7 x 6.6 x 0.8? (450 x 167 x 21.4 mm)Certificates: FCC, CE, ROHS, WERCSMouse Specification:Connection: 2.4 GHz RF Wireless TechnologyWorking Range: 30 feet (10m)Tracking Method: Optical SensorResolution: 1200 DPIBattery: (2) AAADimensions: 4.5? x 2.5” x 1.5” (115 x 62 x 36mm)Weight: 3.2 oz. (90g)