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 Feel Stylish Ultra-Slim design Keyboard & Mouse, Sealed membrane for overall protection, Brush metal finish, Advanced controls Professional Optical sensor with direct DPI switch 800/1200/1600 dpi, High quality switches for over 2 million clicks supported Smooth responsive cursor control with easy scrolling, Designed for professional or gaming use Interact seamlessly with a full keyboard layout and a mouse that’s designed for either hand. Feel free to move around the desk or table with a keyboard and mouse that keep working up to 30 ft (10 m) away from your PC through a single USB dongle that has 2.4 GHz wireless connectivity. Work without worry with a keyboard that has up to an 11-month battery life. Avoid surprises with convenient software notifications that warn you when you need to swap out. Keyboard Specification: Color: Black /White Connector: 2.4GH z Wireless Size: 435.4 x141mm Battery: AAA battery Buttons: 104 keys Exquisite craft strong and durable, and adopts international standards structure design and manufacture, strong resistance to radiation. System Support: Window 98/ME/NT/XP/Vista/7/8/10 Mouse Specification: Color: Black DPI: 1200 dpi Mouse Size: 101x64x35mm Tracking Method: Optical Button Function: 3 Buttons Battery: AA Battery Package Content: 1 x Keyboard 1 x Mouse 1 x User Manual