Keyboard Specifications:
>Slim Multimedia USB keyboard
>ABS material
>10 Single Multimedia hotkeys, easy to use
>Low profile keys
>Laser inscribed keycaps, long life
>Silver waterproof membrane to prevent oxidation
>Injection rubber for better type feeling
>Spill Resistance

Mouse Specifications:
>Advanced 2.4GHz wireless connectivity
>ON/OFF switch
>ABS material
>1200DPI
>5 millions switch
>10m wireless range
>Smart Auto Sleep for power saving
>One high quality alkaline battery include

Hardware Difference:
>Pixart 4202 one to one ID lock wireless solution (3RMB difference only for this with cheap wireless solution), can only do ID paring by software
>Built in IC 3204, much better line and power saving
>22F high quality PCB board
>PK CELL brand battery
>Silver membrane with pasted injection rubber (cheap is carbon and normal rubber, normal rubber type feeling not good)
>Waterproof membrane to prevent oxidization and water
>Laser inscribed keycaps (normal is silk printing, this part material much more difference)