Lenovo Essential Wireless Combo 4X30M39458 Brand New Includes One Year Warranty The Lenovo Essential Wireless Combo is a set of sleek and stylish keyboard and mouse to increase productivity while providing wireless convenience. The slim 2.5 zone keyboard has a responsive key feeling and premium typing experience. The standard size mouse compliments the keyboard in design and functionality. Essential Wireless Combo Features Keyboard Mouse Set Reliable Connection LED Indicators 128-bit AES encryption Protection 2.4 GHz Interface Multimedia Keyboard Spill-Resistant Design Full Size 2.5 Zone Layout Low-Profile Island-Style Keys Wireless Laser Mouse Efficient Optical Sensor For Precision Tracking Movement Resolution 1200 dpi Ambidextrous Three Button Design OS Required Microsoft Windows 7/8/8.1/10 3 AA Type Battery Compliant Standards Plug and Play, TUV, BSMI, CB, IC, MIC, MOC, FCC, NTRA, AES-128