Keycap printing adopts laser carving technology that makes it wearable, durable and long lifetime. Spill-resistant design of the keyboard, so you don’t have to worry about the keyboard stop working with accidental spills. You’ll enjoy responsive and smooth cursor control with the 1600 DPI high-definition optical tracking engine. The sealed membrane ensures a longer keyboard lifetime.It prevents oxidizing of the inside circuit, which may cause defect keys.