3 plate options available: Supplied with any one disc plate of your choice.Adjustable speed ranging from 10-80 rpm in steps of, and with an accuracy of, +/- 1 rpm.Timer setting from 1 to 99 minutes, and infinite mode.The angle can be adjusted from 0 to 90 degrees.Programmable – The user can set and save up to 9 user-defined programs (protocols).Option for auto power on in case of power failure – on the resumption of power the unit will start automatically and run for the remaining runtime.Easy removal and installation of disc plates for replacement and cleaning.