Wireless Keyboard and Mouse Combo, Full-Sized Ergonomic Computer Keyboard, 2.4GHz Cordless Keyboard Silent Mouse Set with 2-in-1 Usb Receiver, 12 Fn Shortcuts for Laptop,BlackSMART Energy Saving: Wireless mouse and keyboard features with smart sleep mode for saving power, they will go into sleeping mode while it s not in use for 5 seconds.silent Design, More Quiet: The Usb keyboard with the scissor keys and the mouse adopts silent click technology, both will allow you to do your job at night.