Rapoo X130pro Wired Optical Mouse and Keyboard Combo features laser carved keycap keycap printing adopts laser carving technology that makes it wearable, durable and long lifetime. Spill-resistant design Spill-resistant design of the keyboard, so you don’t have to worry about the keyboard stop working with accidental spills 1000 DPI tracking engine You’ll enjoy responsive and smooth cursor control with the 1000 DPI high-definition optical tracking engine. Anti-oxidation sealed membrane The sealed membrane ensures a longer keyboard lifetime. It prevents oxidizing of the inside circuit, which may cause defect keys. Keyboard key type membrace mouse sensor optical work method wired.