Question 1

Can you customize the lighting? Can you pregram different colors?

Accepted Answer

To a degree, yes. You can customize each individual key color (Yellow, Blue, Light Blue, Red, Pink/Purple (looks pink to me), Green, and White) by pressing FN+End twice then pressing the key you want to change to the color you prefer. You can also get a few additional colors (whole board) by pressing FN+Insert and letting it cycle to the color you want (this provides more color/shade options than the main colors listed earlier -- press FN+Insert again to pause on a color. FN+Page Up will cycle the colors across the keyboard and allow for some gradient color patterns on the board -- press FN+Page Up again to pause a gradient). FN+Delete will cycle a rainbow effect across the keyboard which you can also pause if you'd like a static gradient of colors flowing from one side to the other, you can also leave them animated. FN+Home will animate the colors moving from inside (around the J key) outward on the board -- I don't seem to be able to pause it. FN+Page Down looks like it turns the keys off but when you hit a key it will light up -- pressing Fn+Page Down again changes the color. The only color set you can fully customize and "program" to stay the way you set them is the FN+End individual key customization, the others will revert to their normal function upon restart. For example, my QWEASD and number keys are set to Red, my F1-F12, space bar, arrow keys set to White, and the rest set to Light Blue. This color combination has remained stored in the keyboard even after unplugging it from my computer. Brightness is controlled with FN+Up or Down arrow keys. Speed of animated cycles is FN+ the +/- keys. For anyone wondering, the Vara K551-RGB and the Kumara K552-RGB appear to share the same colors/settings, the only difference is the number pad.

Question 2

What is the different between rainbow and RGB backlight?

Accepted Answer

"RGB has programmable lights (any color) but rainbow cannot be changed. Rainbow is only the colors shown in the picture, in that order. Rainbow cannot be changed. RGB can be changed."
Whats the difference between the rgb and rainbow? - Amazon ...

Question 3

Is there a headphone jack?

Accepted Answer

No. We plug headphones into computer.

Question 4

Are the key switches replaceable?

Accepted Answer

Yes they are. You can hot swap the switches with other Outemu key switches.

ASIN	B019O9BLVY
Antenna Location	Gaming
Best Sellers Rank	35,256 in PC & Video Games ( See Top 100 in PC & Video Games ) 1,340 in PC Gaming Keyboards
Box Contents	USB Cable
Brand Name	Redragon
Button Quantity	87
Colour	Black
Compatible Devices	PC
Compatible Operating System Family	Windows
Connectivity Technology	USB
Customer Reviews	4.6 4.6 out of 5 stars (11,973)
Enclosure Material	Acrylonitrile Butadiene Styrene Metal
Generation	1st Generation
Global Trade Identification Number	04895173505935
Hand Orientation	Ambidextrous
Is Electric	Yes
Item Dimensions L x W x H	35.4L x 12.4W x 3.7H centimetres
Item Weight	900 Grams
Keyboard Backlighting Color Support	RGB
Keyboard Description	Gaming, Mechanical
Keyboard Layout	QWERTY
Keyboard Plate Material	Aluminum
Language	English
Manufacturer	Redragon
Manufacturer Part Number	K552
Mechanical Keyboard Switch Model	Redragon Blue
Minimum Required Operating System Version	Windows 10
Model Name	Kumara
Model Number	K552-RGB
Number of Items	1
Number of Keys	87
Number of Packs	1
Number of Sections	87
Power Source	Corded Electric
Product Features	Mechanical buttons with blue switches, RGB backlight, compact TKL design
Series Number	552
Style Name	Modern
Switch Type	Mechanical
Theme	gaming
UPC	619257218733 796172194219 791334442481 727196136206 619257218740
Unit Count	1.0 count
Water Resistance Level	Water Resistant

Redragon K552 RGB Gaming Keyboard 87 Keys Mechanical RGB LED Rainbow Backlit Computer Keyboard Tenkeyless Compact Design, Blue Switches for Windows PC Gaming (QWERTY Layout)

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