... 30rpm, 40rpm, 50rpm, 60rpm can be adjustedfreely * Time: 5 different choice for time setting, 3min, 6min, 9min,12min, ... Rotate & Counter-Rotate: when rotate in a contrary way, it can be adjusted, in a mean while, it will pause ... number for fixed time.* Auto-rotate function: When in a normal status, press this button then let it ... restarting if not released the annunciator in one minute, it will auto-stop.