Magnetic Stirrer Plate Shape Round Plate Dia 13.5 in Plate Material Ceramic Coated Aluminum Load Capacity - Metric 20 L Speed Range 100 to 1800 rpm Number of Stirring Positions 1 Voltage 220 Display Digital Amps 0.14 A Watts 30 W Includes Timer Yes Operating Temp Range 5 Degrees to 40 Degrees C Overall Height 7.6 in Overall Length 10.6 in Overall Width 6.9 in Plug Style - Lab Equipment Standard Variable Speed No