Welcome to Our JieruiDeng shop,hope you love this cute keyboard mouse wich combines fashion and functionality into one set - Its sweet cute mixed colors design, brightens your mood during long work - Ultra slim and light design, easy to carry in a backpack or 15 inch computer bag - Typewriter standard keyboard, it's super soft to touch - Cute round keycaps with UV process, the letter will not fade after long typing Full sized Keyboard with 12 multimedia keys (FN F1~F12) (Some multimedia functions may not be available with Mac Os) FN+Esc=Lock Screen, FN+F1=Mute, FN+F2=Volume-, FN+F3=Volume+, FN+F4=Previous, FN+F5=Pause/Play, FN+F6=Next, FN+F7=Brightness- , FN+F8=Brightness+, FN+F9=Calculator, FN+F10=Search, FN+F11=Set up, FN+F12=Connect Projection, Plug and play keyboard mouse Step 1: Simply plug the usb receiver into your devices Step 2: Put 2 AAA batteries into the keyboard and 1 AA battery into the mouse Step 3: Flip the switch on the mouse to the "On" position Product Parameter Connection with computer: 2.4G wireless Transmission Distance: 10m Power supply: Battery (not include) Mouse Button: 4 Mouse DPI: 800-1200-1600DPI Button life: >10,000,000 Key stroke: 3.0±02MM Keystroke force: 52±7G Keyboard size: 384*142*185mm(15*5.6*7.3inch) Mouse Size: 107*60*37.5mm(4.2*2.3*1.5inch) Support system: MAC/WIN/2000/XP/VISTA Packing list:Keyboard *1,Mouse*1;USB Receiver*1;Manual *1;Type C OTG*1 How to re-paring if the the mouse keyboard combo can not work -Keyboard Paring: Put batteries into the compact keyboard, press and hold “ESC” plus “+”, then plug usb receiver to your device. -Mouse Paring: Put battery into the optical mouse, switch power button on, press and hold Left, Middle, Right buttons for 5 seconds,then plug USB receiver into your device