... 100 levels.B/S-: every time you press this button, the brightness or speed series minus 1;Color pulley buttons: static mode ... +: Output signal speed control, every time you press this button, the brightness or speed series add 1, altogether 25 levels;S-: Output ... signal speed control, every time you press this button, the brightness or speed series minus 1, altogether 25 level; Wireless Touch ...