Features:
FN+Up / Down: adjust brightness of LED backlighting, there are 5 levels of brightness:0%-25%-50%-75%-100%.
FN+Left / Right: adjust light running speed, for instance, blinking rate, respiration rate.
FN+ the key on the right side of FN: adjust the blue aperture lights of keyboard edge, there are 3 modes, on / off / breathing.
FN+ digital 1/2/3: customize three kinds of game lighting mode, you can select commonly used buttons for different games.

Package :
1 * MK1 Mechanical Gaming keyboard
1 x User Manual
1x Keycap Puller

After-sale service:
1.One month return and one year warranty service in Smart@Purchase Shop.
2.Your most satisfaction,our all goal.
Just contact us if you have any problem,we will be here with you in any time.