Thanks very much for your visiting in our store,this portable retro keyboard and mouse may be your good choice Classic Retro Minimal Aesthetic Design: -Vintage type-writer style 79 round keycaps with glossy and smooth edge technology -Fresh retro style colors brighten up your computer and help you to keep in a good mood -The keyboard has 13 convenient hotkeys that control a range of multimedia and work-related activities (up to your activities). -The keys are springy and comfy, and doesn’t take much pressure to press down,working all day with Ease Easy to use,Plug and Play: Step 1:Put one AA and one AAA battery respectively in keyboard and mouse; Step 2:Take out the USB receiver from the mouse, plug it into computer USB 2.0 port ; Step 3:Then you can use both mouse and keyboard. How to re-paring if the the mouse keyboard combo can not wotk(Generally the keyboard mouse can work directly) -Keyboard Paring 1.Put batteries into keyboard, press and hold “ESC” plus “+”, indicator starts flashing and enter into paring mode 2.Plug USB receiver into your device. Indicator stays on for 3 seconds and pairing completed -Mouse Paring 1.Put battery into mouse, switch power button on, press and hold Left, Middle, Right buttons for 5 seconds 2.Plug USB receiver into your device. Paring is completed After-Sales Service Every products in our shop has undergone several strict quality tests,please purchase it at ease But if meet any questions or suggestions,please feel free to Contact Us,Our JieruiDeng team will do our best to provide you right solutions