Three instruments in one: Microtube Thermoshaker, Compact benchtop incubator, Microtube shaker without temperature control. Operates at speeds of 250 to 1400 rpm in a 2mm orbit. Timer operates in range of 1 min to 96 hours. Temperature range is ambient +5 to 100°C. Unit is 8 x 9 x 5H". 110V. Block not included. See interchangeable blocks listed below.