2.4 GHz Wireless Connection, Ergonomic Design, Energy and Electricity Saving, Plug and Play, Intelligent Dormancy, Drop Key Cap, HD Laser Engraving Fonts, Comfortable Experience Special Hand FeelStylish Ultra-Slim design Keyboard & Mouse, Sealed membrane for overall protection, Brush metal finish, Advanced controlsProfessional Optical sensor with direct DPI switch 800/1200/1600 dpi, High quality switches for over 2 million clicks supportedSmooth responsive cursor control with easy scrolling, Designed for professional or gaming useTechnical DetailsBrandHPManufacturerhp, HPColourBlackItem Height14 CentimetersItem Width22.4 CentimetersProduct Dimensions43.2 x 22.4 x 14 cm; 739 GramsBatteries1 AA batteries required. (included)Item model number7YA13PAAre Batteries IncludedYesLithium Battery Energy Content3.5 Watt HoursNumber Of Lithium Ion Cells1ManufacturerhpItem Weight739 g