Speed adjustable. Gentle shaking: 20-80rpm Digital pannel with timing: 10S-99Min Increment: 1rpm 4.Compact design,can be put into the incubator oven/refrigerator or other lab equipments 5.DC brushless motor, safe, long life and free of maintenance. Operating silent and stable Non-slip silicone plate: The silicone plate with raised design has better non-slip effect and better sample processing effect. 3D mixing speed adjustable: Gentle 3D rotation mixing, with adjustable rotation mixing speed.