FN + PU / PD: Adjusts the brightness of the light FN + +/-: Respiratory frequency adjustment FN + (F1-F12): Multimedia function keys Specifications: Product Positioning: Gaming Keyboard Connection: Cable Interface: USB Backlighting: Colorful breathing backlight Backlight adjustment: high, medium, low luminance Number of keys: 104 Character switch: conductive film Key travel: 3.6mm Cable Length: 1.8m Key life: 10 million times Operating voltage: 5V Operating Current: 100mA Size: 490 * 255 * 40mm Features: 1.Qingcui loud hitting sound, clear feedback feeling, a strong sense of two-stage mechanical shaft body, straight up and down when struck, no sense of the paragraph, typed to fill the gap in general, hardly ever a one-touch key underway 2.ABS double injection keys, designed for high-strength percussion players configuration, two-color injection keycap ABS polymer processing of raw materials, delicate touch, comfortable, soft and uniform light transmission, different from a conventional rear laser engraving Cap, do not fade durable 3. full aluminum panel, one-piece, steady heavy, texture texture, even more character, and the use of heavier structural design, so that control smooth and powerful, step-Cap curve, scattered and orderly, fitting hand-type, operating more smoothly! 4. add innovative detachable palm rest is designed to allow players in the fierce competitive games, it is possible to easily win, practical stent design phone, hands free, from fish and bear's paw can have both!