Features: The k50 uses a new blue switch that is reinforced at the joint to make the button more stable and durable. Mechanical buttons provide medium resistance, audible clicks and clear, precise tactile feedback for ultimate gaming performance. Built-in 9 backlight colors, 5 backlight modes, press FN + 5 to change the backlight color, press FN + Tab to switch the backlight mode. The keyboard is designed with a 35-key portable design and is compact, not only easy to carry, but also saves space. The big wrist and ergonomics give you a relaxed gaming experience. Macro recording function: If there is no recording content in G1-G6, the default corresponds to F1, F2, F3, F4, F5, F6. If there is no recording in G1: press FN+G1 to enter the recording state. When the G1 lamp is flashing, you can input the recording content. After inputting FN+G1, the G1 lamp will return to the normal mode. Press FN+G1 again to clear the recording and change to F1 function. The G2-G6 recording and clearing recordings are the same as above. Specifications: Material: plastic Key Quantity: 35 Key Transmission mode: Wired USB Key life: 50 million times Operating temperature: 0-40℃ Operation humidity: ≤85% Working current: ≤170mA(Maximum) Compatible System: For Win 2000/Win XP/Win ME/Vista/Win7/Win8/WIN10 Package list: 1 x One-handed keyboard 1 x Key clip 1 x Instructions .