Features: brandnewandhighquality. 1.SK61 is a standard-sized 60% keyboard 2.Hot Swappable Gateron optical Switches Gateron optical switches can be hotswapped at for wish and replaced by other switches. Hot swap keyboard do not recquire you to solder / desolder switches. (Hot Swappable with Optical switches only) 3.Over100milliontimeskeystrokelife,2timeslongerthanthetraditionalmechanical switches 4.ABScase,double-colorABSkeycap,Words will not fade and will be more durable. 5.The for key cap matte treatment for excellent feel 6.3*layerprogrammabledownloadmode(RGBversion).Wonderfulshiningbacklight,16millioncolorRGBlightingeffectstomeetthedemandsofgamers.Customizeyourkeyboard'sbacklightingthroughthesoftware About optical Mechanical Keyboard: They have a high actuation point of 1.5mm for fast response. Light Strike optical switches utilize a horizontal infrared beam which is transmitted across the width of the inner keyswitch. The infrared beam is normally blocked from reaching a sensor across from it by the stem. Once a switch is pressed, the switch stem no longer blocks the infrared beam and the beam is detected by the sensor, which activates the switch. Due to the optical mechanism, an optical switch has an extremely fast response for time of 0.2ms, which means faster reactions in those times where timing is critical, such as when gaming. Drive AP: 1.DIYlighteffect 2.Powerfulgamemacros 3.Therearehundredsoflighteffectsavailablefordownload(continuousupdate) 4.Full-keyprogrammable Specifications: Model: SK61 Item Type: USB Wired Keyboard Material: ABS Color: White Axis Body Type: Blue/Red/Black/Brown (Optional) Backlight Type: RGB Light Keys: 61 keys Connection: Wired Interface: USB 3.1 Type C USB-C Cable Length (for m): 1.5m/4.921ft (Approx.) Keyboard Lifespan (times): more than 100 million Power Supply: USB Port Quantity: 1 Set (other accessories demo in the picture is not included) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 Set X Wired Mechanical Keyboard