Speed (RPM):600-3200 (2700 for 50Hz models) Product Weight:4 Kg(8.8lb) Dimensions (base):165 x 122 x 165mm (6.5 x 4.8 x 6.5in) Warranty:24 months Markings:ETL listed / CE Features and Functions 1.Does not walk:Tough metal housing combined with just enough weight, provides a stable platform for all types of mixing. 2.Variable Speed Control:Allows slow speed shaking action up to high speed vortexing. Each attachment is designed to produce different mixing actions, allowing users to choose the correct action for each application. 3.Multi-Task Versatility:A broad range of attachments of various shapes, sizes, and materials allows for mixing of almost all common tubes or containers for Hands-Free or Touch operation. 4.Hands-Free or Touch:A 3-position power switch operates with continuous action or "Touch On" control. With the true "Hands-Free" operation of continuous action, lab operators can greatly increase lab efficiency. 5.Unmatched Reliability:Many years of proven performance in laboratories all over the world. 6.Simple to use:Ready for use with supplied pop-off cup and 3-inch platform.