1. DPI+ button (defaulted to speed up the cursor).
2. DPI- button (defaulted to slow down the cursor).
for KW-G41,the thickness of the foam in seat cushion is nearly 12cm,and There have a large area of sewing thread technology in backrest and seat cushion,which make it looks more three-dimensional,besides,metal frame with thick of 1.5mm make this chair stable enough,class 4 gaslift makes this chair safe enough,and this chair is also can be adjustale in many place like: 2D armrest which can up and down,Rotate.backrest angle adjustable:90°-180°,gaslift adjustable:which makes seat height has an adjustable range of 8cm.that's why it's our hot selling in middle level:good price,good function and good looking.